Expired food and sprayed pans.

I did my groceries as per ussual at Checkers, and I bought FETA the 400 grams and when I was about to use it at home three days later it had expired on the 26th and I did my groceries on the 29th meaning when I bought it had expired already. I trusted Checkers a lot to make things worse I bought a non-stick pan and I used it first time and my egg was sticking and the pan picked up too much hit. when I use the pan again there was rust. I am very dissapointed at them and I will be writting to their ombudsman.