Hi guys, was really excited by the deal on the Korean Zombie T-shirt today. Sadly, when I tried to pay for it, I keep getting the same error code:

"The transaction has been declined because of an AVS mismatch. The address provided does not match billing address of cardholder. (Code:27)
PLEASE NOTE: If you are paying with a Debit Card, a hold for the order total will be placed on your card for each attempt to place an order."

I've tried what seems like dozens of times re-entering the information (I'm preeeeetty sure it's correct) to no avail. Was really hoping to grab this shirt off you guys. Is there a known error with the system?