Dissatisfied

I was at Checkers hyper gateway yesterday and i always look for mark down cos we dont earn enough to pay full price, so always looking out for discounts and specials. So i love those Tim Tam biscuits, but can never afford to buy at the normal price, but checkers is very good reducing items that are almost expired and im happy to purchase it at the reduced price, but yesterday i was disappointed that they didnt pick it up that some of those biscuits had passed the expiry date. I brought to the managers attention. She did not want to sell them cos it was already 4 days past expiry. However i wait to hear from them.