We (based in NYC )provided $35k worth of signage to a company that went out of business. Prior to going under, they promised that they were just awaiting funding before paying us for our services in New Jersey. Now the new owner of the project is not responding to any emails or phone calls. The ability to file a lien expires in new jersey after 90 days of completing the work, but they had continued to promise us payment for a long time after that. What options do we have?