Usually true, but where I currently live my neighbor has to bring me my mail about once a week - the post office apparently just decides to put several people's mail in his box, rather than walk around the building to the separate apartment mailboxes.
I also end up with my weekly Science subscription usually arriving in pairs every two weeks. I'm not sure who is to blame for that one.
You are saying your branch is reliable, and I'd agree, most are. There are some bad ones out there where they prefer to hide behind the system and dodge complaints, no matter how nicely brought. Basically Newman from Seinfeld is an accurate descriptor.
I also end up with my weekly Science subscription usually arriving in pairs every two weeks. I'm not sure who is to blame for that one.