I swear I got ripped off at a cash only gas station (US Gas/Full serve) a couple weeks ago. Gave him a $20 and thought I saw 4.24 gal on the pump as I was leaving and prices were in the $4.20 range at that time which doesn't add up. F-it, I'll pump my own gas from now on and get a receipt. Even then, how would any driver know how much the pump is spitting out? The digits on the pump could be rigged...bastards.