A till receipt is the printed proof of what you paid. Keep the till receipt, ask for a till receipt.
It is what you need for a refund, and the print fades within a year or two. A till receipt is printed on paper coated in a chemical that darkens with heat rather than with ink.
1nountill receiptThe printed proof of what you paid.
“No refund without the till receipt, however obvious the fault.”
till receipt is a receipt.
Practised in Bank & Post Office