They have a quality assurance person.

A person from quality assurance called me today. Apparantly the guys who left midway through the installation reported my area as needing a maintenance visit, so we was calling to check the quality of the maintenance visit. I told him to my knowledge, no maintenance guy had came, and I needed INSTALLATION, not MAINTENANCE. This guys either hadn't read my file or didn't have access to it. I told them I was no longer interested in using their services, all I wanted was reimbursement for my time and the wires removed from my house. He just said sorry.