Make sure that the zip code of your BILLING address is identical to the zip code associated with your credit card account. At the payment step, you will be able to enter a different billing address than your shipping address. If you have attempted to place an order with a zip code that does not match the address associated with your credit card account, the order amount MAY have been authorized/not charged to your account. This means that the charge will be automatically cancelled by your bank within 2-3 business days. For further questions regarding this matter, please contact your credit card company.