Niagra Restitution Services called and left a message with my sister in law to call them at XXXX. I called them and asked them to remove her number from their contact list, and was hung up on. Then I called back and the rep refused to send me proof of debt in writing. His supervisor also refused, and could not give me the name of the original debtor. She asked me if I was still driving a certain make and model car, and said they could take a lien on my vehicle. She also threatened garnishment. Every time I would ask for proof of debt, she would report that I refuse to pay. She offered to send me a confirmation email if I gave her a card number today to pay the debt. I told her that I would do so after I have proof of debt in writing. She again refused to do so. 
