Reply #5: As others have said. First verify your own account for the amount.

[Hoopla Phil]

Then if there is still a problem you may want to contact the station. BUT, after you've already left it is already too late - legally speaking.

I once had a gas pump show that I put 13.xx gallons into my 12 gallon tank. I reported that station to the weights and measures department in my state. They are the agency in Texas that makes sure that all the grocery store scales and gas station pumps (ect.) are correctly calibrated.