Another little tidbit to add. Where I live (city of around 70,000) you cannot even get ahold of the USPS by phone. No number is even listed. And, for what it's worth, I only rarely get anything sent to me priority mail that arrives in less than five days.
Rick the phone number this is the same everyplace. You have to work to get a phone number. The way I got it was simply to go to my local post office, and ask for their local number. After a great deal of gnashing of teeth...they gave it to me. NOW...all I do is call them first, ask to speak to whoever is on duty in charge..and let them know I need the number to the LOCAL post office in whatever city or town I am trying to reach.
Alternatively, you CAN get a "real person" on the line at the main 800 number..but it does not tell you HOW to do it. I found out by trial and error that you simply hit zero at every prompt..eventually, it defaults to an operator, and you can then request the number you want.