I was sold cheese with mould at The Marc Pick n Pay

I did my groceries yesterday 29/01/2024 at Pick n Pay at The Marc in Sandton. i bought grated cheese that the sell by date is 01/02 which is on Thursday and today wen i was trying to prepare my meal wen i opened the cheese it had mould on it... i would blame myself if i had kept it out of the refrigerator or took time to get home but neither of that happened. How can they sell us rotten stuff, dont they check if their food is good for sales?? I'm rlly hurt and i want my refund they should come take their cheese im not gonna go back to them... unfortunately i cant uploaded the picture of the cheese