This actually happened. I knew the Post Office changed their rates so I made sure I put the correct postage on my envelope and when I handed it to the clerk she asked if this amount was correct. I said yes. She then gave the envelope a puzzled look for a while. She asked another clerk what the postage was for a one ounce letter. He gave the wrong amount. I said he was wrong. She said she needed to ask her supervisor and left the counter. I got on my phone, went to their website, and pulled up the new rates. She came back and I pointed at my phone and asked her if the rates on their website were correct. She said, “Oh. If that’s what is on the site I guess you’re right.”

This kind of thing happens every time the rates change.