Compliant of rotten food

i just bought Buffalo wings from Pick n pay Cresta they are rotten and even have a smell the problem , I didn't see this in store is they had to closed them in the food container and put the price the dis colored and smell awful this is the 2nd time I am purchasing their cooked food which is sub standard and not well prepared. this was mean to be my lunch meal however now I have to starve due to them selling rotten staff.