I am a distributor that supplied material for a commercial building in Chicago Illinois. The general contractor that ordered the material has a balance due of $20,000. He has stated that he will not pay. I contacted the owners to notify them of this situation. It appears that the general contractor had falsified lien waivers stating that i have been paid in full, he even had them notarized. These waivers were given to the owner and title company. He collected checks for the waiver amounts but only paid a small portion of funds collected to me. What is my next step to collect. I plan on sending lien rights notification to the building owners but what do i send to the general contractor? The building owners want him prosecuted. thanks