KFC chicken makes me family ill

Tonight my family elected to buy KFC from the Rondebosch Main rd branch. We bought 4 wrapster boxes, 1 street wise three and a snack burger. We ate it at home and about an hour laterveveryone in the family were complaining about stomach ****s, vomiting and needing the toilet. I then decided to call KFC and complain about what happened. The manager, Eric, after trying very hard to explain to him what happened said he would refund the money. I was asked to come to the shop and get the money back. On arriving there, he then decided he needed to call the area manager. She then told him to tell me to bring proof that we became ill. What proof do they need. Me to **** on the floor or bring some of the vomit to the shop. Ladt time we support KFC with their sick chicken.