If it is your debt, you can be sued. If you have no assets, with careful managing of your money, there might be nothing they can collect.

They would need to sue, and win, to garnish your wages.

All they can do is sue. Then you can present your case.

There is nothing they can likely collect. The money for burial can be used to purchase the burial pre-death.

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It depends on the type of case and at which point in the litigation the case is.

It belongs to the child, not the parents. It should be in a blocked account or annuity.

If they did not file for a default you can still answer. If the did get a default, you can file a motion to set aside the default.

Contact the filing attorney, in writing, to let them know.

Yes, certain duress can invalidate an agreement.

Yes, If you paid for a service not provided.