Wayfair's international shipping service is very efficient and delivers in time. If your order is on hold, it means that you have asked to change the date and set it to a certain time. Your payment is not clear, and the company is waiting for your payment to get cleared. Wayfair also provides you with a facility to cancel your order before it ships. Wayfair's return policy is also good and reliable. If your stuff is shipped, then it cannot get cancelled. but if you want to resend the item you can send them back.
If you have any inquiries or issues regarding the orders, you can go to their website and they have FAQs that are ready for your questions. If problems still persist, they also have customer service that is ready to assist you.