Did you always check through your receipt after each purchase?
Its not a habit of mine actually
but its a "must do" thing when you shop at Giant.
The toyogo drawer was priced at $39.89
but we were charged at $49.89.
Approached the counter staff after checking the receipt
and was told that the promotion was over
and they had forgotten to remove the promotion label.
In a way, we got discount for their mistake
and got refunded.
it was like the 5th bad experience we had there...