Bad Service and Even worse food

I purchased food from KFC Woodmead through MR D. When I received the chicken it was slimy and had a rotten smell, i then took a picture and sent it to Mr D. I also ordered burger meals which we obviously would eat either because if the chicken was off what guarantee do you have. I spoke to the consultant of Mr D who sent me a R47 voucher and apologized, yet the store has not contacted me and my order was R185.00. I then asked them who would then pay for delivery and they told me they would credit my account with R50 which was done but the supposed voucher could not be used as it was never active. I am do disappointed in the poor service and bad food