Bought lunch box in the morning last Friday only to find that the piece of meat was rot...

Bought lunch box in the morning last Friday only to find that the piece of meat was rotten. Took it back after work and the manager by the name of Eva gave me an attitude told me that next time when I buy I should tell them not to give me a thigh. So I basically deserve a rotten thigh since their KFC sells rotten thighs. To think that I've swallowed it, had to take allergex, a stat dose of an antibiotic and a tablet to start my tummy from running Eva didn't take my matter seriously. She ended up apologising after screaming at her for giving me such an answer. KFC morula in Mabopane was the best when they first opened but now I won't be eating there anymore let alone buy KFC. A simple I'm sorry genuinely and my money back which she gave was enough. No mercy and remorse, what if I had gotten sick?