Bad customer service received from Pick n' pay

I went to my lunch from Pick n' pay as Usual (Medium chips and quarter leg ) , paid everything and went back to the office and eat , only to find that the meat sold to me was rotten and bad smelling , went back to the store and explain to the one of the team members where i bought the meat from , He then took the meat to his supervisor , the Supervisor by name of RENE then come out and say there is nothing wrong with the meat as she has been selling it like that since morning , i tried to explain to her that in most cases i come across meat in that condition and just don't return , she continued to say the meat is fresh I have a problem, She took me to Her Manager called Mariwana by the front , He asked her as to what the problem was and She laughed and say this man says this meat is not right and I'm telling Him is fresh , the manager then told me i have no right to shout even if i think i have right He will through me out of his Shop. She continued laughing as He was talking to and I got ****ed and told Him that , that not the way He and His stuff should treat their customer. Black customer are treated like trash in that branch as being shouted at is not happening for first time