Credit rating mistakes are costing unsuspecting consumers thousands of dollars in higher interest rates and preventing some from getting much needed loans, a CBC News investigation has found.

In the past few years, more than 500 complaints have been filed with provincial consumer affairs agencies across Canada about credit reporting agencies, many alleging errors by companies led to their poor credit scores.

"I feel like a guy who is made to pay for the sins of something I didn't do," said Mervin Smith. "It's like being wrongfully accused of something."

- How to check your credit report

Smith is one of many Canadians who told CBC News about how unknown errors on their credit rating reports caused them financial strife. In some cases, even after creditors and collection agencies admitted to a mistake, it took several months to restore a credit rating.

The Brampton, Ont., truck driver, spent months trying to get his credit rating fixed after an error appeared on his credit report.

When applying for a mortgage in late 2011, Smith learned that an unpaid Rogers bill for a “Marvin Smith” had been listed on his report since 2007.

He says his bank granted him the mortgage but denied him an overdraft, a credit card and a line of credit.

Smith sued debt collection agency iQor in small claims court over the name mix-up and won a $3,000 settlement in May of 2012.

- Collection agency harassed debt-free Canadians

Despite that, his Equifax credit report still refers to him as "also known as: Marvin Smith."

"I just applied for another card and I got turned down again and I had perfect credit," said Smith.

Many Canadians affected

Dan Barnabic, a Toronto paralegal who has represented clients in credit disputes for the past seven years, said the impact of a false credit score can be devastating.

"You are what your credit is," said Barnabic. "And when you discover something that actually does not belong to you…, that will actually prevent you from getting credit, it's devastating. It turns into a horrific situation that people lose sleep over."

Few statistics are available about how many Canadians know about mistakes on their credit reports.

Consumer Protection BC, a non-profit that oversees provincial consumer laws, says that in the past three years it has received 341 calls from people complaining about inaccurate information on credit report.

But many provincial consumer protection agencies don't track how many complaints about credit ratings are about potential errors.

A national survey by the non-profit Public Interest Advocacy Centre published in 2005 found that 18 per cent of the people surveyed had discovered inaccuracies in their credit report. Ten per cent of those who discovered the issue believed they were denied access to financial services due to the errors.

Barnabic estimates the number could be much higher. The Toronto paralegal says about one-third of his approximately 3,000 clients have found inaccuracies in their credit reports.

"On a weekly, daily basis people would knock on my door and say, 'Dan, I have a problem. I have something on my report that does not belong to me,' " said Barnabic.

Unaware of charges

Under the credit reporting system, companies — such as phone service providers and banks — provide information about clients and their payment history to Canada's credit bureaus, such as Equifax Canada Inc. and TransUnion Canada.

Companies pay a fee for the bureaus to keep track of clients. In return, the credit bureau provides the companies with access to consumer credit reports, which is based on information gleaned from all its client companies.

When a bank is deciding whether to grant a mortgage, for example, the financial institution can access the individual's credit record via a request to the credit bureau.

Consumers can also request to see their credit rating but few do. A mistake can go unknown for months or even years, potentially leading to extra interest costs or other issues.

Joan Biseau, a hospital technician in Moncton, N.B., believes she is still paying thousands of dollars in extra interest on a vehicle she recently purchased after her credit rating was downgraded due to an error by Rogers Communication.

Biseau was unaware of an outstanding charge on her Rogers account until three years after the fact, when a debt collection agency began calling in February, 2011. Biseau promptly paid the bill when notified.

The telecom company had sent her last bill for about $200 to the wrong address and later admitted to the mistake.

Despite Rogers acknowledging its error, the black mark remained on her credit rating for more than a year.

Biseau says it forced her to get a high-interest loan on the 2007 Chevrolet Cobalt she bought in September of 2011, increasing the cost of her purchase by up to $10,000.

"It's terrible. I'm not a millionaire. And I need my car for work," says Biseau. "So I had to buy it … for $7,000. At the end of it, I’m going to be paying $17,000 for my car because of the high interest rates.”

The information about the owed debt was removed from the TransUnion and Equifax credit reports after CBC contacted Rogers and Equifax.

Calls for federal oversight

In a written statement, Rogers said that its policy is to investigate immediately when a customer contacts them. "If there is a mistake, we have the issue corrected with the collection agency and the credit bureau or bureaus and get confirmation from the collection agency that the correction has been made," the written statement said.

Paul Le Fevre, Equifax Canada's director of operations, says the agency depends on correct information from its member companies. Mistakes are rare, he said, but when they do happen, the company needs the creditors who supplied the information to sign off on it.

"What we rely on our members to do, though, is to remove that information or amend that information accordingly within the electronic media that they send to us," said Le Fevre.

TransUnion also responded in a written statement, stating that it aims to "maintain accurate information on every consumers' TransUnion credit report."

Consumers can report items believed to be inaccurate by phone or email and the company will investigate it, the statement said.

Under current provincial consumer protection legislation, companies can face fines, but Barnabic says the fines are rarely, if ever, used.

The Toronto paralegal says the federal government should oversee the credit rating industry rather than leaving regulation in the provinces’ domain.

"Our elected government so far has showed very little interest in improving the system and actually getting the consumer on equal footing with the financial sector," said Barnabic.

He suggests modeling it on the U.S. system, where credit bureaus must by law investigate consumer complaints about disputed information on their credit rating report within 30 days.

Barnabic says credit bureaus should be forced to either delete errors immediately or face a hefty fine.

If you have any information on this story or any other story please contact us

Also on HuffPost:

Loading Slideshow...
  • Online Dating Scams

    <a href="" target="_hplink">Fraudsters feigned interest</a> in lonely online romance seekers to rob victims of about $50 million last year.

  • Debt Collector Scams

    Phony debt collection agencies <a href="" target="_hplink">have pressured victims</a> into giving up millions of dollars. The Federal Trade Commission recently closed down two California-based <a href="" target="_hplink">companies with call centers in India</a> after they defrauded Americans out of $5 million over the past two years.

  • Online Marketplace Scams

    Craigslist and eBay are a playground for scammers. Consumers have sent payments to <a href="" target="_hplink">places like Nigeria </a>for items advertised online only to discover they have been scammed. Last year, Romanians pretending to be U.S. citizens put fake ads for pricey items on eBay and Craigslist, <a href="" target="_hplink">defrauding Americans out of more than $100 million. </a>

  • Prize Money Scams

    <a href="" target="_hplink">Canadian police arrested a man </a>who tried to take a $70,000 processing fee from an elderly Californian woman who believed she was going to win a $7.5 million lottery prize in April. More recently,<a href="" target="_hplink"> eight Jamaican swindlers accused</a> of duping Americans in lottery scams were also arrested.

  • Charity Scams

    Fake charity organizations come out of the woodwork to exploit the generosity of others, <a href="" target="_hplink">especially during times of disaster.</a> Most recently, an organization that claims to help disabled veterans called Disabled Veterans National Foundation (DVNF) <a href="" target="_hplink">took millions of dollars from donors</a> without spending the money on veterans.

  • Mortgage Foreclosure Scams

    Scammers targeting struggling homeowners have offered false services to help with mortgage settlements. Mortgage foreclosure scams have shot up <a href="" target="_hplink">60 percent in 2012 as new federal programs</a> for mortgages have provided avenues for fraudsters to exploit.

  • Travelling Relative Scams

    Scam complaints related to travelling surged right before <a href="" target="_hplink">spring break last year. Crooks defrauded</a> grandparents out of money when their grandchildren were travelling abroad. The scammers, who find out about the travel plans from places like social media sites, pretend to be the grandchild asking for wire transfers on the phone. The scams have involved scammers pretending in an email to be a victim's travelling relative who has recently been mugged or has lost their passport.

  • Food Scams

    Although there isn't much data on how often it occurs, food scams can pose a tremendous<a href="" target="_hplink"> health risk. The chances</a> of dilution and counterfeiting increase when food is imported from other countries, and some foods like fish and olive oil are particularly prone to adulteration.

  • Online Prescription Drug Scams

    Scammers have sold drugs to online consumers and then posed as government agents asking the buyers to pay money to <a href="" target="_hplink">avoid jail time. A Texas woman </a>killed herself after being caught up in one of these drug schemes.

  • Credit Card Scams

    Credit card breaches allow fraudsters to make charges on other peoples' cards after getting a hold of numbers. Global Payments Inc., a third party payment processing service for MasterCard and Visa, made headlines in April for reporting that over a million card numbers had been compromised from their system, <a href="" target="_hplink">according to CNET.</a>