I inherited the "war zone" area on one of my bids and learned what the "Who is it.... What's in the box" game was the first week. They'd scream those questions thru the front door to intimidate me and took their good ol' time getting to the door. I wasted a ton of time there.
This was before the SDN had a bar code so every morning I filled out notices with everything except for the shipper's name, marked the Final Attempt box and if the game started I tagged the door and left, giving the pkg to the night clerk that evening.
The next week the transformation of time in meeting the customer as I pulled up was remarkable.