When UPS delivers to my house, they never ring the friggin door bell. They just leave it on my deck if my car is here. If my car is gone, they put the package under the door mat - like you can't tell that a huge box is sitting under my mat.
And then if I check the tracking number on the website, it says I signed for it. I complain and they give me no satisfaction.
The only delivery service that doesn't leave the package if no one is home is FedEx, and they leave a note when it will be redelivered ... unless they deliver it to the wrong %^$# house like they did my hard drive.