I thought of something else. This new PA that was assigned to you probably works under the supervision of a psychiatrist. (That can vary state to state.) She would have to see that pdoc from time to time for "treatment team meetings," where she would discuss her clients - like you - and her decisions about your care. Ask to be told the name of this psychiatrist. You have a right to that information. Then know you have the right to submit a letter to this doctor, outlining that you have concerns about this PA. You needn't go into much detail. You could request an interview to express your discomfort about this PA.

The supervising psychiatrist will likely lean toward defending the PA. But I don't think you'll be totally dismissed. You might, at least, get your meds reinstated. I've actually made appeals like this to medical supervisors and gotten satisfactory responses.

There is, generally, always someone higher up that you can appeal to. The trick is to remain very calm. Keep what you say clear and simple. And refuse to be brushed off. This PA sounds like a bully who is testing you.