maggots in the food

My sister arrived at my company and felt for something to eat and i told her to get chicken licken because it was the closest so i sent my worker to buy some hot wings and about an hour later my grandfather arrived and he ate a piece of the wing and he had seen maggots all over the 1 piece and i sent it back with my worker to show the manager what had occured and he chased my worker away saying he has no time for him and that he is not interested in him and got in his car and lift his branch.