+1. When I can I drive to the next suburb over to mail packages. None of the POs around me actually scan packages but at least at the neighboring suburb they treat me like a human being instead of a thorn in their side. I hate hate hate my post office.I used to move around a lot and still travel frequently, so I have experience with tons of different locations of USPS. I find that most of them are terrible, but there are occasional good ones. I would try several post offices that are within reasonable distance from your home, sometimes not getting treated poorly is worth going slightly out of your way for. Right now I drive twice the distance to a USPS several towns over because they scan things usually (this is the first time something weird happened)
On a related note. When you're bored sometime and want to amuse yourself try reading Yelp reviews of local post offices.