There was a loud knock at the door, so I went

There was a loud knock at the door, so I went to open it. It was a delivery service that brought us two pizzas with cheese and olives. Me and my friends were very annoyed because of the long delivery. It took about three hours to get the pizzas. I paid for the order, took the pizzas and was going to close the door when the courier asked me: "Any tips for me?". It drove me crazy: Whaaat?! We have been waiting for three hours! Your restaurant is 5 minutes far from here! You must work on your services before asking for tips!!. And I closed the door. Pizzas werent that tasty as we expected.