Have you had carriers lie about delivery attempts?
I've never experienced this before until the past couple weeks. I suspect that the busy holiday season and being an Amazon Prime member factors in.
About a week ago, while I was sitting at home waiting for a FedEx package, online tracking updated to "Delivery Attempt - Customer Unavailable Notice Left." I know for a fact that a delivery was not attempted and there was no door tag left. There is no way I could have missed a knock since I was sitting literally 5 feet away from my front door at the time delivery was supposedly attempted, and my dog is an early warning system if anyone even approaches.
Yesterday, again while I was home, USPS had a "Delivery Attempt - Notice Left" with no actual attempt or notice. It wasn't a package I needed right away, but I was geeking out looking forward to getting a package on a Sunday as part of the new Amazon - USPS partnership for L.A. and NYC. [continued below]