By fiancee's birthday was last month, one of the things he was given was a gift credit of $20 to Amazon.com. He received it in an email, and used the option to apply it to his account for a future purchase, since he couldn't think of anything at the moment.
Fast forward to few days ago. He knows what he wants, logs on... and has a credit balance of zero. He finds the email, checks the code, it says it's been redeemed. Wtf. We check my account, just to make sure he didn't accidentally add it to the wrong account. Nothing.
So he he gets on the phone with an Amazon.com rep. Over the course of an almost hour-long call, she tells him that the credit is shown as having been applied to his account... and also shown as having been used. But oh, she's also seeing that he has made exactly zero purchases made since the time he applied it to his account. -___-
After some time, she agrees to reapply the $20 credit, yay! She sent him an email verifying the new $20 credit, which should be applied soon. He's happy, hangs up. It seems like bad service turned good! Except...
A bit later, he checks his account... to find a $14 credit. I wanted him to call again, because that's just bullshit, but he was too fed up, and decided that $14 is better than nothing. At least for the future, we know not to apply a credit until actually ready to use it. What a pain.