Cite examples of you giving negative feedback to someone?

Question: Cite examples of you giving negative feedback to someone?

When I was in my office that time i was deciding to order the kadai paneer from Zomato and I was ordered. after some time the Zomato boy comes and gives me the recipes and go after collecting the money, after going zomato boy, I was tasting the food the food was delicious but the used oil in the recipes are very harmful for human beings. I was rating the Zomato app, 1 from 5 so it was my first negative feedback.