Meat was off and had a bad smell

So on the 5th of August around 6pm I went to KFC John Voster in Centurion to get some meal for my family which I paid R300.70, right when I get home I started preparing food for my family I noticed that the meat was not looking good and had a bad smell and the pieces were dry and off, immediately I took back the meat to the bucket put it away and I emailed KFC notifying them with the kind of a service I got and the next day they rep**** to my email asking for information that was on the proof of payment I gave them everything they wanted. Yesterday I received an SMS stating that my case is been closed I need to contact them. okay I called them last night to find out why was my case been closed without me knowing and one of the customer service consultant promised to call me back and never got back to me. today I called again to follow up with them and only to find out that they can't help me any further I was supposed to take back the food to the store within 24 hours if I wasn't happy I mean why are they only telling me that 8 days later after the Incident,and how do I return the food to the store whilst I stay 30 minutes away from the store at my expense even...Why are they selling rotten food to the customers and expect customers to return back the food do they even consider safety and health matters what if the food had food poisoning because the meat was off. I'm so angry and disappointed at KFC unfair treatment to their customers