Keep calling and leaving messages, and keep a log of when you call in case you need that down the road for any reason. If you can email the doctor/practice, even better, because then you have an automatic written log If it were me, I would make sure they understood the urgency of the situation, and how the change in meds is affecting me.

Is there no patient advocacy group you can contact? A local PD support group or such? A state, county, or even municipal agency that might could help? Just thinking off the top of my head.

I'm so sorry this is happening to you. Hang in there