The elders peak into the windows of my car looing for visible evidence that I am still with him. They have searched through my mail looking for phone bills to check if I still talk to him over the phone.
That is a violation of Federal law which can get them in a world of hurt. If you have proof that they are going throu8gh your personal mail before you get it, and it isn't being done with your parent's help, then you might want to consider reporting it to your local postmaster. The postal service takes a very dim view of anybody going through the mail without permission.
Sorry to hear about your problems. My family went through something similiar about 20 years ago, so I know whence you speak. Since then, I've seen the same treatment meted out to others. One lady actually caught an anointed sister hiding in the bushes of her yard spying on her. In the end, she told the elders that what she did was none of their business, so they DF'd her. She didn't have family in the organization to agonize over and considers herself better-off now than she was before.
You'll have to make your own decision about what to do. It won't be easy. But from my perspective it looks like your elders are determined to bounce you out of the organization anyway. That often happens when one doesn't kiss their big toes and mumble "Yassa Massa, whatever youse wants". Its the old power thing, either you are brought to heel, or you are tossed out. I feel for you big time!
Read what folks have to say and weigh their advice well before acting. We all wish you the best.
Forscher