I bought some alcohol and a few Rockstars on July 4th last year. I wasn't paying attention to the total and just swiped my card and left. When I got home my friend noticed I was charged for a CASE of Rockstar for each ONE! Since I have such a terrible memory, I could never remember to go back to Lee's to show them my receipt. I still have it but it's totally faded out.
I was overcharged like $50! :'(