I am a homeowner who had a contractor come in and do some work. The work was taking to long and they were doing additional damage to my home. We released the contractor and he filed a mechanic lien stating we owed additional monies. We did not have a contract, and never received notice of a lien. We actually received a call from our mortgage company that a lien had been placed. What can I do to remove if he doesn't have a contract to show proof of working at my residence.