Chronic pain is a very complex issue to understand and treat, so you may need to be a bit more tolerant and open to options as you seek to get your pain under control. That might sound a bit harsh, but once you understand that the medical profession doesn't have all the answers, drugs don't cure anything, and there are many other factors in play.
Think about spreading your net a bit wider and see what you can find. There is a lot of info on-line if you have the time and inclination to wade through it. Also books.
I have used many professionals in my chronic pain travails, and have gleaned a bit from each but importantly never the full amount from just one. So you may need a variety of professionals to help you make some progress. My pain doesn't appear to in your league, but it stopped me working .
I've seen GP's, 2 pain specialists, chiros, many physios, several masseuses. Each knows a lot, but not everything you need.

Drugs can have a rebound effect and begin to cause pain when removed or reduced. I had this with Tramadol.
Drugs mask the problem and don't cure it. Identifying and treating the causes of the pain might be an option, if they are treatable. Some wear and tear things such as DDD and arthritis may not be. So pain management is just about it.
Diet and lifestyle must also be considered. A poor diet will not give you the nutrients your body needs to repair itself.
Determining what is a good diet is an interesting exercise in itself and is no easy task. As a start, avoid all manufactured products and prepare all meals from scratch.
Get blood tests for deficiencies.
The majority of people have poor diets leading to all sorts of deficiencies. One of which is magnesium, and muscle spasms and soreness is a key indicator.
I cured my similar muscle problems by taking a daily does of magnesium-best thing I ever did.
Hope you can make some sense of this!
Keep on managing your treatments-it is vital that you know and understand it all, and don;t be afraid to question anything.
It's your life.