I was working on a project in Illinois as a subcontractor. The GC is based in Missouri. I no longer work for the GC. He will not pay me for my final two weeks of employment. He is trying to change the agreement we had for the previous 6 weeks. He wants me to rewrite two invoices to show a lesser amount before he will pay me. He also wanted me to sign an unconditional lien waiver release before he would pay. I offered to sign a conditional release for the amount he is not disputing. Now he wants the invoices rewritten, and for me to sign a final conditional lien waiver release for the lesser amount. He sent me a Missouri release that does not list the jobsite address in Illinois. I'm not willing to sign any final release until I have received ALL the money he owes me. I think he is trying to bully me into signing early. The last day of work was June 14, 2019. He is violating the Illinois Prompt Payment Law. What should I do?e?