Kathy, I'm sorry to hear about your parents' current state. They've
probably turned against you, and tried to make your feel guilty for not
following their path through life. Their behavior---their sudden role
reversals, the cutting of the hair---indicate deep psychological
trouble. Don't ignore the signs.
My guess is that they're church is actually a cult, if what you're
telling me is true---and I don't doubt that it is. My stepfather was a
Christian religious fanatic, and a complete lunatic in my opinion, whom
I feared almost daily while growing up. It's very difficult being
associated with these type of personalities because they're emotionally
and mentally unstable, and need help. Everything you do is wrong,
according to them.
I would suggest finding material on cults, and researching the
subject. Colin Wilson's book, "Rogue Messiahs," is a masterpiece on
cult psychology. Ultimately, I hope your travails will be a learning
experience that elevates your life to new levels of hope and
acceptance. Eventually your parents will pull out of it.