expiring food

Good day i went to buy fried chicken at pick n pay last night only to find out when i was ready to serve it was smelling the odour was to bad i could not eat it. and their braai pack frozen had some green things on it, what they sell for people there it expiring things. can you please they should stop selling things that will make us sick, i wanna what should i do with the expiring fried chicken i bought yesterday wasted 69 rand for nothing as i'm talking nearly vomit for rotten fried whole chicken.