Awws sorry to hear that! When mine arrived, it was a little curved. x_X Luckily i put it inbetween two books and it straightened out and was sold on ebay. The person who bought it from me on ebay said they got the promo card from enterplay as well and it was scratched to heck!
It might take a few days for them to reply to your email, a week later I would try emailing them again and attatch pictures!