I have heard a few people say that their card won't work for whatever reason on the Book Depository, and I recently had trouble with this too, so I thought I'd make a post to help you get around this problem! What you can do, is make a Paypal account and put the card that isn't going through, onto paypal. This is fairly easy, just takes a few minutes! Then go back to the book depository website and pay for your order through the paypal option. Good luck, and I hope this helped!