As soon as orders are received, processing of such orders begin in earnest. So, once you pay for an order within the window of transaction, Medvacc is unable to accept a cancellation of the order, and so, Medvacc will be unable to process a refund. So, we implore you to always double-check before an order is made. That being said, Medvacc will refund to you only if the product or item is defective, damaged or wrongly included in your order. Please refer to our policy for return/refund.