<prompt> Human: Like the title stated, my sisters car registered to her was stolen, was found, then impounded. The car was not worth 500, but the impound lot wanted 1,000. My dad decided to take things in his hands and talked to the impound lot saying to keep the car since it was worthless. The impound eventually sold the car, and today my sister gets a call from a debt collector saying she owes 4,000. She had no idea she was being charged this time, never seeing a letter, or being contacted from the impound lot. If a letter was sent, it was most likely intercepted by my dad we are unsure a letter was sent though.She says the debt collector was harassing her, even calling her at her work. He also said she has to pay by 5pm today or they will sue her.How do we proceed with this? If she had known fees were accumulating, she would have paid them right away to avoid this situation.Thank you.  <response>: You should read your states laws around vehicle impound and sales to satisfy the debt. There may be maximum impound charges or other things that will be useful to know. 