My wife ordered a bunch of stuff on sale ($45.00 worth) from Bath and Body Works. It was sent UPS and then the USPS delivered it. We never got the package. They said it was delivered on 1-9.
My guess is it was delivered to the wrong address. We don't really have a problem with porch pirates because we have landscaping blocking the view. The front entrance has a screen enclosed vestibule that they leave packages in.
Most people who get something that is delivered to them by mistake will return it to the post office or bring it to the correct address themselves. That's what we do. Oh well, she's out $45.00.