I hired a roofing contractor to make repairs to my roof. The result after signing the proposal contract and paying half the cost up front was the contractor abandoning the job, leaving behind incomplete, shoddy work. When contacting the contractor to inquire on when they would return, they stated the job was complete and demanded remaining payment. I sent several photos of damaged roof areas that were never repaired as agreed upon both verbally and in contract, along with damage they caused to the roof. The contractor broke tiles on the roof while at the property causing additional damage that requires further repair in addition to repair work remaining. The contractors response was demanding that everything was complete and to make payment or else it would be very bad for me. About a month later now, I received a certified letter in the mail on Saturday, stating that if I didn't pay them the other half of the balance shown on their contract within 5 days of receiving their letter, they would file a lien on my home and take action to have it foreclosed to take payment. I'm in need of a Law Firm that can assist me with this case of breached contract and threat imposed by this contractor. I'm looking to obtain feedback on best approach for this situation, including legal options.