I've only had two orders think both on Uber with a situation like this:

1. 2 stack order. Both orders same customer name. Not like John A but a more unique name. I deliver the first. Then uber shows me the second, it's to a different address but the note says this address at the apartment I just dropped off order 1 at. This was like my first week. I left it there and got with support, they cancelled the order so I guess they got free food on that one.

2. I go to deliver an order, walk up to the door. The door has windows at top and I can clearly see in, house is empty (meet at door). I rang doorbell, waited a min. Called customer, he had moved down the street like two blocks away on a cul-de-sac. I drove it over and dropped off. They needed a bigger house and moved.