KFC Mansfield must fall!

I bought KFC online on Mr. d food app and it had a promo code stating I will get 2 burgers and and two cold drinks for free which I did not get to me that's false adverti*****t over and above that i received half of my order apparently they forgot to add the wings I will never buy from KFC Mansfield ever again their service is trash!!!! I then called them and the guy I was talking to only had to say am not sure what happened. KFC you have lost a customer!!!