I once had to go to a mail processing facility in SF to retrieve a package which had had an exception in the delivery process. That was it's own nightmare, but I digress...

The postal worker I eventually talked to had a desk in a little office where she seemed to be sorting out issues for people like me. I think my case was a pretty mild one, but she kept getting calls from people about some live chicks which were somehow stuck there. It did not seem like fun.

The post office is amazing. They are true unsung heroes.