I went to the grocery store last week, which is 30 miles away from my house, and when I got home, I discovered I was overcharged by $20. That made me mad! 
That's terrible! Did you call and tell management?
Yes, I did. But now I have to wait until next month to get my money, as I only go there once a month. Grrrrrr...
Thats frustrating. At least you'll get your money back eventually.