Until today, I have never had problems with credit card statements. Then came my recent Discover card bill. I'd returned some shoes to the department store, so, as expected, a refund credited to my account; since I hadn't used the card to make additional purchases, I had a positive balance. Yay! Then I happened to glance at the cashback award and was *shocked* to see I'd been "awarded" a negative amount. Yes, because I had a positive balance, the cashback bonus became a negative value. I lost money on my cashback bonus.

has this happened to anybody else before?!?!

I am calling customer service....