We're sorry to hear that. First of all, logically you don't have to pay if something went wrong with your order. We will process your refund if this is the case. Also, it's important to contact the shop where you placed the order. Let them know which items you want to return and carefully follow their instructions to make sure that the return shipment arrives safely. If the shop provides a tracking number, mention this when requesting the return and keep the number until the return has been processed.