You might want to check out psychiatrist APA ethical guidelines if you are in the USA. I believe they are responsible to help you transition to alternative care, and not to abandon you, etc.

I personally would not want any doctor or therapist to be involved in who I see once I left their care if they are booting me out because of their Bad behavior or my refusal to be force fed what they are demanding of me, and I don't agree. Their ethics guidelines I believe speak against this arm twisting.