Reused codes?

So I saved up the points needed to get the $5 gift card, which took about a whole week. They sent the e-mail, which had a link to a page which had a link that would direct you to iTunes, code typed in and ready to be put in, however when I tried to redeem the card, I got a message from the store saying that the code had already been used. Frankly Im quite disappointed, this app had quite a bit of potential. Dont bother wasting your time with it.

Keyanna O. about CFA Rewards