Hello, pos didn't get the receipt. This is a problem with pos communication. As long as the deduction is successful, your money will be deducted even if you don't get the receipt. Now you have two ways to deal with it, 1. Call the issuing bank to cancel the transaction because there is no pos receipt. 2. Ask the merchant to refund the cash directly to you, because the card money has been deducted. Please accept it. Thank you.