Hopefully you have or are getting diagnosis and treatment from medical specialists. As to a case, there are two main questions, was there...

If emailing and telephone attorneys has not worked, contact your local or state attorney referral services.

Maybe. Often repossession of law value used personal items does not make financial sense to lenders.

Look for a new attorney to take over the case. Consult with and hire another attorney before firing your current attorney.

You can sue your attorney for malpractice, or breach of contract. You may also want to look into Bar Association Fee Dispute Arbitration.

While it might have been unprofessional, these facts do not automatically show a tribal violation.

You may want to widen your search. Attorneys take cases throughout the states in which they are licensed. This is even more so since Covid.

Consult with experienced malpractice attorneys.

Consult with experienced debt collection defense attorneys.

It may be a scam. Whenever one is unsure, give no information, demand proof in writing (do not give your address or other information),...