" Shell Canada is coming under criticism over its handling of a glitch that resulted in people getting overcharged for gas last week.
If you gassed up at Shell last Thursday and Friday, you may want to look at your bank statement.
For instance, one woman who shared her story says she pre-paid for 50 dollars but ended up filling her vehicle with 47 dollars worth of gas. When she looked at her bank statement, she saw she had been charged the full 50 dollars."
Shell Canada promising to fix overcharges - News1130