If you would like to have a refund reversed that you issued to a customer for any reason (such as a delayed order gets delivered and the customer accepts the order), you have to request that the customer initiate the reversal in Buyer-Seller Messages. The customer will need go to the Problem with order page for the order, or inform Amazon customer service to reverse the refund of the claim. Where a customer has agreed to late delivery, or a replacement in Buyer-Seller Messages, ask them to initiate the reverse refund process. Amazon cannot reverse a customer refund for seller-fulfilled orders, without the customer's affirmative consent.