Rotten Meat

I bought KFC bucket for one last night at KFC Protea Glen, upon eating I realized there was a funny offish taste and I smelled it I could tell it was rotten , the thing that blinded me was the crispy outside which made me eat it but when I saw that it was rotten it was late because I had already eaten half of the meat. I'm now having a running tummy. I'm disappointed and even thinking of going to a Dr. I can't believe our lives are compromised like this.