If a GA dealership went out of business & did not pay taxes on a truck I bought 10 yrs ago, why do I have to pay dealership tax?

I bought the truck from an individual 10 yrs ago and had no idea that he had a dealership in another city. The truck was totaled about 2 years after I bought it. And now, 8 yrs. later, I find out I am responsible because the dealership went out of business, they can't find the individual I bought it from, and the dealership tax has to be paid. It is almost $1000! I can't afford that! Now they have started charging interest! What can I do? - Is this your question? Add additional information