Petro Canada review: Overcharging

I have been overcharged numerous times when I have gone into the Gibsons store. When I return with my receipt I am told I have wait to talk to management. This has caused me to return numerous times and is costly for my gas and my time. I also was double charged one time and was alerted from my bank. Once again I had to get a bank slip and then back to Petro-Canada to get my refund. This not only costs me time and money to keep driving back to the store but is also a complete nuisance.