Harry, I'm very sorry for your experience, but talk and demand answers from your doctor; it's your right.
I am new to this site and I'm glad I came to it. Your bad experience is good for me in the sense that I have been scheduled for an SCS implant as "last resource" for terrible, uncontrolable "permanent neuropathic" pain as a result of post- laminectomy syndrome. I have been doing some research on the 3 different systems and Bionics seems to be the best. Nonetheless, I am not still convinced that a device that has to be implanted in your deep tissue will not cause situations like yours (rejection to a foreign body). The location of your stim may be playing a part on your disconfort. I have good lines of communication with my pain specialist and he knows that I will do, am doing, research for anything that is going in my body. I had a very bad experience with my laminectomy on the hands of the director and top national ortho surgeon (80 chapters and 15 books on spinal surgery and more than 140 articles,; I walked to the OR and came out with my left side(from the waist down) paralized and a very weak right side, with constant and permanent neurological pain. My personal and professional life was completely changed. I believe that my pain doctor may have an answer and probable solution for you. Good luck and please feel better, but demand answers.