I mailed my PO Box fee in a mail box inside the post office. It had a money order for a years worth of po box service. I paid it in January before the due date which was the end of January. I went to check my mail Saturday February 7 and my box was locked. I tried again and moved the key around thinking maybe the inside of the lock was stuck on mail or something, but it wouldn't budge. This isnt the first time something has happened there. It isn't often, but I've had mail ripped open. Anyway, my mail was either misplaced or stolen. I'm going to call the post office on Monday to try and resolve it. All I have is the money order number on the receipt. If it was cashed it could be tracked. We will see.