I am so sorry you're struggling!

I think the best course of action would be to find a new therapist who is willing to help you move past these feelings.

Never in my experience has a therapist who terminated taken me back in the future. Once termination comes along, things are so bad for one reason or another that the therapist knows that the fit is not right and he/she is not longer the best for you. If you're dealing with a burocratic system, the chances of getting your therapist back are even worse as you could be seen as a liability for the entire organization.