Bought several boxes of Christmas treats for friends which had the special Tesco Clubcard price, nearly half price. I forgot to let the cashier scan my Clubcard and then didn't realise. I also didn't get the receipt though have the transaction showing on my debit card. Yes I'd forget my head if it wasn't screwed on and all that.
AIBU for thinking I should go back and ask for a refund and the discount to be applied?