Thank you for your reply
For legal representation
the best we can do is refer you to the same sites used by other attorneys, http://www.hg.org or http://www.lexmundi.com
In order to sue the state agency, you must give them notice of claim within 180 days of the claim accruing. So you would need to send them a written demand explaining your claim against them, that it is your putting them on notice of what your claim against them is and that if they do not offer to resolve the claim you will sue. Once you provide the notice of claim, you could then sue in court.
If you have a new SSDI attorney, that is the main thing, because if you have an 18 year history of being disabled, you did not just get cured overnight. CA claiming that none of the other disabilities exist is nonsense, because you have the documentation from your doctors and from GA who has findings that you were certified disabled and CA cannot ignore either. So your SSDI attorney has a good case on appeal.
As far as suing the state for not turning over the files to you, you need to find out from them if they did turn them over to your first attorney that you fired. If they did, then your case against the state is not going to succeed and you may have to seek to sue your first attorney for malpractice.
The wages and money SSDI is incorrectly attributing to you would be part of your appeal with your SSDI attorney and upon proving that to the SSA they should order the corrections made and if not then you have the right to appeal the SSA administrative decision to the US District Court
At this point, I believe you have a case with your SSDI appeal, but you need to find out what happened with the files as to whether or not you have a case for them not sending them or whether they sent them to your first attorney. If your first attorney mishandled the case and this causes you to lose with your new attorney, you can sue that first attorney for malpractice to seek to recover your damages.