First, go to see another specialist. Chiropractors can be great but their scope is limited. For any complex issues you need to see an orthopedist, better yet see if you can find a shoulder specialist orthopedist in your area.
Secondly, you can file a formal complaint with the American Medical Association (AMA) against that physician. I had to do that years ago for the HORRIBLE bedside manner a surgeon had with my Mom. That formal complaint is still on his record today.
Good luck on getting your medical need attended to the right way!