I am horrible about not looking at the total at the store - after swiping my debit card and entering the code, I am usually putting the card back in my wallet and just get handed the receipt and leave. I might get charged for 6000 grapefruits one day too! lol
I don’t ever use my debit card-or any other card-to shop-always write a check or pay cash, because I am a fanatic about seeing the bill is correct before I pay it. I felt for that manager, though-the two customers in line behind me were laughing...