Maggots in my chicken - Consumer Complaint for CHICKEN LICKEN

Yesterday I bought rock my soul 3 via Mr Delivery. When I was busy eating, I noticed Maggots. Then I contacted Chicken Licken Highveld Mall spoke to a lady, she said I must lay a complain with Mr Delivery. I'm disappointed because the food was cooked by them not Mr Delivery. This morning I sent the pictures at Mr D and minutes later I received a refund. But still I'm not satisfied because I've ate some of the chicken and what if I ate the Maggot?