If your payment failed when you tried to place an order, it could be due to a number of reasons. First, double check if your credit card number, expiry date, and CVC numbers are all correct. Next, you'll want to make sure you have sufficient funds on your credit card to process the transaction.
If you receive a Do Not Honor error, then you will need to contact your credit card issuer. In this case, the credit card issuer has likely put a temporary hold on your card and they will need to be contacted in order for this hold to be lifted. Once you have cleared things with them, please try the order again and let us know if you run into any trouble.