If I understand your saying the car is paid for, and you have other debts you are afraid will get judgments against you and then go to seize your car:
Generally, States prohibit the seizing of reasonable unsecured personal items used for essential life needs...household goods, furntiture, and a needed vehicle (presumably not an extravegent one) for example. Being able to establish that it is needed for your medical care, etc. would help.
Only the card expires, not the line of credit it is attached to. So interest will still accrue on the unpaid debt.
How do I report an unpaid bill to a credit bureau?
No they cannot, and if they say they can they are lying. Tell them to leave you alone or you will call the better business bureau on them. Now, they can put a slam on your credit.
By listing the creditor on the bankruptcy schedules.
Unpaid traffic tickets are not reported to the credit bureaus.
no
Is a credit balance in a vendor subsidiary account an unpaid balance owed?
Is a credit balance in a vendor subsidiary account an unpaid balance owed?
Is a credit balance in a vendor subsidiary account an unpaid balance owed?
Is a credit balance in a vendor subsidiary account an unpaid balance owed?
a "credit balance" is money that you have.
Pay it.