california General contractor was hired for whole house remodel, collected 20% deposit and was to be paid in phases upon completion of work. He kept collecting advance payments (taking advantage of someone who didn't know how the process worked). He was explicitly asked why he was taking advance payment and that it wasn't working out for us this way and he replied that it was the nature of the remodel. Took way over the proposed time frame and ultimately abandoned the project leaving a lot of work to be done. Refused to come back to work citing "money owed" however the money doesn't correspond with the actual work completed. He filed a mechanics lien, we filed a cslb complaint and a complaint with the bond company. Bond company says we terminated the contract because we refused to pay him, even after he abandoned the project we met with him to give him opportunities to come back which he refused to do. What is the most appropriate way to prove that he abandoned the project and what violation codes can be cited? He left the house in shambles with a lot of HVAC and electrical hazards/issues including a lot of shoddy work that needed to be corrected. He told a neighbor that he was using this as a “fill in job” because he “underbid”.