I have a military question but don't know how to word it so i will explain?

In 2007 my back was hurt in the field. My NCO at the time, who was responsible got away with it, in the same way that a simple robber gets away with taking your television in the ghetto and there isn't much evidence to stand on, the soldiers who saw the incident happen have denied everything because they were either afraid of the NCO, were his friends or they believed in some "Vegas" code, what goes on in the field stays in the field, which I believe is wrong. But anyway, my situation now is this, in 2009 when I was actually able to report what happened to me without interference from the NCO or his friends, it was marked off as scoliosis, even though in my prior medical paper work I had no proof of such a syndrome/problem, then later it was proven by a different PA that it was not Scoliosis but indeed something they, as in he and the medical staff, had seen before but only with victims of Improvised explosive device incidents. Because Of this my MOS became limited, I went from Combat ops to doing paper work. Then when it came time for me to get out of the military I was approached with a contract to sign up for the national Guard instead of taking the Individual Ready Reserve option. I told the NCO with the contract no. But he was persistent and made it a written order that I show up every time he said I had to show up, since I had other things to do, which were to get papers signed so I could get out finally, I had either the choice of signing his contract or being forced to stay in his office until he let me go. I did not have the choice of just getting up and leaving like so many soldiers have said I should have done, No I couldn't because an Article 15 was offered by him as well if I decided to leave, Even though I told him I couldn't enlist and showed him my medical records proving I was not fit to fight whether I wanted to or not, I know none of you have heard of this happening and I'm sure you think it's crap but I ure you, it isn't. Now I have to report for drill in Augusta for artillery and i don't know what to do. I have asked the doctors at The VA hospital where I live for a "soldier is not fit to fight" form so I could give it to the NCO I had to report to but they said all that information is already on file and they could not give me any such form or card. I need to know what to do about this before I report in January. I cannot where a vest of any form because of my severe back injury. They see it as I am able to walk and talk and nothing is paralyzed so I must be able to do what it is they tell me to do. How can I fight this, because unlike others, I simply refuse to be screwed over and lied to anymore. I'm done with that garbage with one bad experience after the next from them stopping my marriage which didn't get to happen to this. I cannot take it anymore and refuse to be more than just a "statistic". I cannot even run anymore without Collapsing and I'm only 160 lbs. Does anyone have any information they can give me That will help me?