I don't like that it's hard to get the number for your local post office. I had trouble with bills not being delivered, and then getting late fees on them, and tried to contact them. I even had a bank change my credit card number because I never received a statement one month. I know thousands of pieces of mail get delivered just in a small area. I have the most problems with substitute carriers, who can't seem to tell a 6 from an 8 (last # in my street address.)

I think Postal "Service" has tremendous variability from place to place.