As an HVAC professional, we have performed a job for a commercial *old folks home* (diagnostic, repair, and installation of a PTAC unit totallying around $8000) that has gone unpaid for 8 months. In those 8 months we have sent letters, emails, and made a few phone calls in attempt to collect the debt. We have been told to contact accounting at different numbers and different email addresses. We have been told the parties no longer work there and been given different email addresses and been thrown in a few loops. What more can we do to receive payment from this establishment? Can we file a lein on the property without have filing anything on the SCR.