The Quebec Superior Court ruling on a class-action suit against Telus says the Vancouver-based carrier unlilaterally changed the terms of contracts for 177,425 customers in Quebec and began to charge 15 cents per incoming text message.
If the ruling stands, each customer would be reimbursed about $15.
Telus says it's reviewing the court decision and may appeal.
The company says it notified customers of the price change "well in advance" and offered the customers bundles with flat rates that included unlimited incoming texting.
The court said that under Quebec law, consumers must know exactly how much they will pay for services under a contract they have signed.
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