General Contractor hired an unlicensed-out-of-state sub-contractor to complete work on commercial properties. The sub-contractor did not complete work and abandoned the worksite. The sub-contractor is now demanding payment for incomplete work and threatening the General Contractors Customer with threats of liens on the commercial properties that incomplete work was done. Customer of General Contractor does not want to pay General Contractor until a Sub-Contractor signs a release stating that Sub-Contractor will not place liens. Sub-Contractor is refusing to sign statement until paid for 100% of work.