Can an investigator threaten to arrest me?

This is a scam and violates the Fair Debt Collection Practices Act.

How can I minimize the damage in a debt-collection case, and how can I find out if and what I'm actually liable for?

Talk to a local attorney. If you can' find one advertising debt defense, try a bankruptcy attorney or the National Association of Consumer...

I work and live in New Mexico and an Arizona attorney filed a judgment against me for a debt

Yes. If the Arizona attorney got the judgment in Arizona, they first have to pay a filing fee to file the Arizona judgement in a New Mexico...

Do NOT pay them a penny. The following applies if you live in New Mexico: The time limit in which they have to sue dates from the date of the most...