The mail they sent might have been marked as spam if it is not from an address in your address book or safe list. Please double-check your email information before making a purchase as well. Minutes after a purchase is completed, a confirmation email is delivered. You might have to wait longer for the email if it's busy. Finally, if you have already paid for the purchase, it's always a smart idea to contact your credit card company or bank. This is to make sure that the payment came through and request a refund if necessary. These steps should help you confirm that your purchase passed through, and resolve any issues if it didn't.