I am sorry you are having such trouble. Be persistent, and work with people you trust to find a doctor that can both help, and who cares. You need to be your own advocate here, and while that's just adding to the stress which I am sure adds to the pain, it will be worth it in the long run.

Do look around, there are more places that specialize in pain management and a lot of work is being done in that area.

You'll be in our prayers.