As a seller, you must accept the return as per Amazon’s policy, but you do have the option to inspect the returned item before issuing a full refund. If the customer returns the item incomplete, used, or with missing parts, you can file a SAFE-T claim with Amazon to dispute the refund. Document everything carefully, including photos of the returned item showing its condition and any missing parts. If the item is not returned or if the customer sends back something entirely different, escalate the issue to Amazon Seller Support with all evidence, such as the original shipment details and photos of the return, to justify a partial or denied refund.