I had a few postal drivers leave a note on the door stating they couldn't deliver, when in fact I was home when they did it. They made one trip up my driveway on a hill with a pre filled out we missed you door hanger. In my area FedEx is the one that delivers everytime. Maybe you need to call the branch office and speak to a manager. I did notice since I got a ring, it only happened one other time, so maybe the you are on camera part scared them into doing the right thing.