It depends on the strength of your evidence and his arguments. Consider if it is worth it to let it go and maintain the relationship.

Once they have a judgment they can take further action such as garnishment. If you had an agreement on payments they may have breached that...

That is possible, if LLC was handled properly and it is shut down properly. And if the owner had no personal liability for the debt.

Look into filing the legal document, Claim of Exemption.

It is not true. They can recall the debt.

You have several options. But further facts are needed, such as your current earnings and assets. There is fighting the debt, negotiation and...

Many Courts have online searches by name.

There is no particular specialty, just civil litigation. Yes you may have a case though the amount you might be able to recover might be less than...

It is probably too late unless payments were made. Consult with experienced attorneys in the state where this occurred.

You may have a civil lawsuit for their actions, even if not a FDCPA violation.