Hi Pooh, sorry about the issues you are having

I have not had an RFA, but came close. My pain doc was planning on doing one in my lower back, even did the first two diagnostic injections with success, but he then decided not to do the RFA because I have widespread RSD and he was afraid of causing it in my back. One of my brothers had a bad car accident several years ago, really hurt his neck which caused horrible migraines, he had an RFA done in his neck and it was the best thing he ever did...stopped the pain and migraines.
All I can advise is to research it, ask questions and make sure your doctor is really good at them. With all that info, you should be able to make a decision you are comfortable with
Good luck to you!
Nanc