My post office, 10003, Cooper Square on 4th Ave & 11th Street, used to be the worst P.O. in the city, maybe in the country. Everyone they couldn't fire ended up there & they were so rude & incompetent & stupid. Good luck getting your package that they couldn't be bothered to deliver. The lines were as long in the summer as everywhere else at the holidays.
Good news! They are nice, helpful, efficient, friendly these days. It's been like that for a while, not because they fear for their jobs. It no longer ruins my week to have to go to the P.O.