PO: Post Office or Pissed Off?

I went to the local Post Office this morning to send a few last-minute Christmas cards, and to pickup a parcel. What should've been a quick in-out ended up taking forever. It never ceases to amaze me that, on the Friday before Christmas when everybody is doing the same thing as me, and the line of customers is out of the door, the local Post Office assumes they can manage with only one counter open. And the cap it all, the girl being served at the counter had not even bothered to seal up the parcel she wanted to send or write the address on it. And the Post Office worker waited while she did all that, without serving anyone else in the meantime! Very annoying.