Yes, the dv shelter can't stop his financial abuse, but could they not offer you some counseling/advice? Try the national hotline for support if not the local shelter. They are usually pretty great.
I am overdrawn too. I was living quite well until Xah went crazy.
Once divorce proceedings start they put a stop to the crazy money withdrawings to some extent. You need temporary orders. Seek legal counsel, but don't expect fairness or understanding from the law, either. They will create some order from the current chaos, however. Your A needs a strong hand and many eyes watching right now.