Choppies hygiene and bad service

I went in to choppies Polokwane and bought two pieces of fried chicken for R19 and sum odds. Went to my car to proceed eating. Finished the drum and when I went for the wing I realized it was rotten and the meat inside was black.. couldn't eat it and I went to the store politely asking for another fresh meat..the first Manager(Tebogo) was willing to assist,got the attention of the other two Manager/supervisor(Patrick).they told me they won't assist me and if it was them they have eaten that black rotten meat..what type of hygiene is this..I'm disappointed because I buy that meat every morning.im not happy at all for their bad service.and their treatment.