Horrible taste and service

KFC Mandalay needs to leaves to the business policy, bought bucket of hot wings last night but they tasted like used oil. I called them and told them a lady said i can come back with tomorrow they will give fresh wings and i should just bring the slip. I went the today the lady i spoke to was not there she was off, the manager on duty was not so keen in assist. I had brought the wings even though i was told not to bring, they took the wings that brought back and warmed them up and gave me chips on top of the wings i returned.