Hatched eggs in the food

I bought ribs and Buffalo wings today for R165 for take away. Arrived home with daughter, I was so hungry, I digged in immediately. Half way through eating my food, I was greeted by maggots.

How the heck do hatched eggs end up in food? I called them immediately but guess what their after service was bad because it took them 3 hours to come collect the food and give me my refund. They are situated 5km from my home. I had to call them 3 times in that 3 hours waiting time.

I will never buy from there ever again.