You may have a legal malpractice or fee dispute case. Consult with experienced malpractice attorneys in the state where this occurred.

In general, yes an attorney can do that, lawfully. But it might be an ethical violation.

The law where the debtor now lives or the states where the debtor has assets.

Go to the local library and ask the librarian to direct you to resources.

They can sue in the state where the debt was incurred and domesticate the judgment in the state where you now live. It may be more difficult for...

They can pursue you for the debt. -

Bankruptcy may, or may not, be your best option. Consult with experienced bankruptcy attorneys in the state where this occurred. But be cautious,...

Put your request to them, in writing. You may then get cooperation. If that fails, contact the corporate office.

They would likely allow you to continue to pay.

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