10/10/2013 10:27 EDT | Updated 12/10/2013 05:12 EST

Rogers Sorry For Outage, Will Reimburse Customers

The Rodgers Communications sign marks the company's headquarters in Toronto, Wednesday, April 25, 2012. (AP Photo/The Canadian Press, Aaron Vincent Elkaim)

The head of Canada's largest wireless carrier says a country-wide outage that left many Canadians in the mobile dark for hours Wednesday night is unacceptable, adding the company will reimburse wireless customers for a day of service.

"I recognize this service interruption was unacceptable for our customers," Nadir Mohamed, Rogers Communications president and CEO said in a statement Thursday.

"We worked as quickly as possible to restore service and it was gradually restored over the course of the evening. I sincerely apologize to all of our customers for this significant inconvenience and appreciate their understanding and patience."

Rogers could not say why customers spent more than three hours without talk or SMS service. Data service, however, was not affected.

The company said it is still investigating the root cause of the blackout to ensure it doesn't happen again.

Rogers has some nine million mobile customers across the country, but it did not say how many were affected by the blackout.

The significant service outage prompted Rogers and Fido customers to unleash their frustration about the company on Twitter.

Many mistakenly contacted a Brooklyn man name Glen Rogers, whose Twitter handle is @Rogers.

The company also took to Twitter to notify people about the outages.

Service was resumed to some customers around 10 p.m. ET but others continued to experience outages until around midnight. The company earlier encouraged those with outages to use a wireline phone for emergencies.

Here's how some Rogers' customers reacted to the outage:

Photo gallery Rogers Wireless Down, Customers Rage On Twitter See Gallery