I am a homeowner. I hired a draftsperson to draw up my floor plans and elevations for a small addition on my home. I have an architectual degree. The draftsperson identified himself as an architectual designer/drafter. I signed a contract with him to do so. At our first in person meeting and his first visit to the site, the draftsperson showed up with 3 sets of floor plans and elevations that he alone had drawn up without meeting with me nor visiting the site nor using my drawings as requested. He demanded full payment before he would continue work on the project to integrate my floor plans, elevations and design ideas. He left the meeting in an angry state after I said he had not listened to me nor produced any work that I would find able to use. WIthin 20 minutes of leaving my home he sent a email, blaming me for everything, calling me names and threatening to sue me unless I paid him in full. I responded, with a request for mediation. He subsequently ignored my request and reportedly filed a lien and sent me a notarized copy of doing this. I want to fight this lien filing also believe his is misrepresenting his credientials and behaved in a scary and unprofessional manner. I am 67 years old and felt scared in response to his presence in my home. What do I do?