Maggots in my Chicken

i bought a family feast at KFC in Florida, Gauteng. the one on Goldman Str. <br> We ate the chicken but had a few pieces left, we then put that in the fridge and about 2 or 3 hours later i wanted eat another piece but when i opened the box the chicken was infested with maggots. also bare in mind that i have already eaten this with my family. The store contacted me offering a R200 gift voucher, this is pathetic. i have been feeling sick and probably have to spend my own money to get medical help. The head office of KFC promised to contact me but have not done so yet. i am disgusted and disappointed.