Penny Wise sausage rolls sour

I bought penny wise sausage rolls from pick n pay. When I was busy baking them I smell something was off. It was the sausage rolls and I bought 2 boxes for my kids. The only thing I could have done with it was to through it in the dustbin. I am very disappointed because it was a waste of money. I can not take it back because I don't have the slip anymore. Maybe its a good time to shop elsewhere.