I hired a GC to do a renovation. He filed the Notice of commencement. The job was supposed to take 30 days. After 6 months of "no Shows" and poor craftmanship, I told him I could no longer work with him. I pulled new permits and hired new individuals to complete the work. Recently, he left a message on my phone saying that he was putting a lien on my property for the entire contract price. I paid him for the work he performed. Should I cancel the NOC or hire an attorney?