Religion in general, how can i get people to stop bothering me?

all the time i get bothered by various religious sects or whatever. a girl at work is in the salvation army but has never read the bible, jehovahs visit me and try to give me leaflets, christians stand in the centre of the city where i live with microphones bothering everyone about fictional characters. i try to be polite and understanding but its so annoying im just getting to the point where i snap at others. how can i get them to stop chasing me with leaflets and preaching to me etc..?