let them know how you feel about their religion and I guarantee there will be an about face on how they treat you
I don't think most people of any group respond well to negative characterizations of their religion. Try telling a bunch of Baptists or Catholics you think they are all members of a depraved cult some time; I bet you get a negative reaction out of them too.
And my neighbors are not just hypocritical "smiling facade" type people. They are decent honest hard working helpful genuinely nice folks. I have known of situations where they were honest and helpful to other people, much to their own cost, where a lot of people would have said that they'd be justified in behaving selfishly.
If they are faking some kind of scam to fool me, I would again say I'd be happy to have a whole neighborhood full of people faking and scamming and fooling me the way these people are.
I'm sorry for whatever negative experiences you have had, but you are really coming across very nasty about a whole group of people.