I hope that this message is late and that you have found relief.
However, I also suffer from neck/ shoulder pain on a daily basis and so I suspect you might still be hurting. So I was searching the internet for alternatives as I've had 3 surgurgies which I would say has put me back to exactly where I was before the surguries. Anyway! I came across a website from Cornell University hospital in New York. Unfortunately, I live in Wisconsin so for me wasnt an option. Have you checked out them for help? Their website showed that they have a pain management clinic. They might be able to help you. Well Take Care!
Stay hopeful. As difficult as that is.