ROTFLMAO! Apparently you have never visited a post office or sent/received mail in a large metropolitan area!
I had to go into a Post Office in Southern California a couple of months ago to tell them that they were flying Old Glory upside down.
I was hard pressed to find an employee at the counters that understood English well enough to understand what I was trying to tell them.
Once I did get it across to one of them, they did go out front and fix it quickly, to their credit.
Actually I have. I probably know more about their operations than you.