Extremely dissatisfied customer

Hi. I purchased 10 boxes of the 400g chicken steaklets from shoprite yesterday the 3rd of March 2020. While preparing them I noticed it had a terrible smell and when I had cut it all of them were black and mouldy on the inside. It still has months till the expiration date. I'm extremely dissatisfied as country fair used to be a good product to purchase. I would have returned them to the store however I cannot seem to find the till slip. I have pictures on hand if needed as proof.