We requested for a change order in December 2019 and customer agreed to change order in January 2020. Customer hasn't sent change order, but sent an email notice in May 2020 that the owner of the project has exercised the right to take over the balance of project. Our customer and the owner are refusing to pay and say its the others reasonability. We have missed all our lien rights deadlines, but have been providing prepaid service work to the owner.