Complain about rotten meat from hungry lion

Hello so I brought food at Hungry Lion at the new Rustenburg Mall yesterday and to only found out the chicken was rotten so we called the manger to tell him that this chicken is not ok and he changed the meat for me but he still gives me the rotten chicken I tell him and he was rude and said it's like I'm the problem here changes again for me but when I get home we ate and some of the pieces were still not fine now my son is having a stomach bug and my niece is also not well today she says her stomach funny. I'm so upset because I didn't cause drama and demand for my money back I just trusted that he is the manager he would do the right thing so I wasted my money because we threw away all the meat away and times are tough now I'm just worried they gonna make other people sick if they continue to sell such *******.