I don't know where you are but chain goes like this, Manufacturer to wholesaler/dealer to a store or store chain and than to individual customer, Unless you send it back to manufacturer directly you are dealing with store and it may send it back up the same chain. If you have warranty list there should be an address who to send it to in case of warranty claim.
PS: "destroying" doesn't preclude recycling just enough not to be salable as good product. Store or whomever is dealing with it may be required to send a sticker or whatever or just be trusted for reimbursement. All depends ob business model of all involved.