Rant

I'm getting very pissed off with the postman who delivers down my street. Every day I end up having to walk up and down the road, redirecting items of mail which he puts through my door.
Surely the prime requisite for employment as a postman is the ability to read an envelope and put letters in the correct letterbox?
I'm not even sure if he can speak english, let alone read it. Previous attempts at a cheery "good morning", followed by a polite request to check the address before delivering, have been met by baffled silence and an expression which suggests I've asked him to explain string theory.