They guarantee that your order will be delivered on time unless unforeseen circumstances prevent them from doing so, which is so rare as to be reliably labeled never. If they can’t do so within the agreed period, they will contact you immediately. They have a 24/7 customer support team to help with any problems clients may have with their services. If there is an issue with your order, they will do everything they can to resolve it as quickly as possible. Even then, they understand that there is always a chance that you may not receive your order after placing it with them. In the very unlikely event that this occurs, they will make every effort to provide you with a refund.