Technician cut existing in-home coax wiring without authorization — trouble ticket unresolved

During my new-service installation, the technician cut the existing coax runs in my utility room that serve the rooms throughout my house. I was not informed this would be done and did not authorize the removal or disabling of the existing wiring. I attempted to contact the installer directly and received no response. I subsequently opened a trouble ticket with Xfinity and have repeatedly received automated messages stating that someone will contact me, but no one has. I would now like this escalated to a field supervisor or the appropriate customer-relations team. I am requesting that Xfinity inspect the work, determine why the existing wiring was cut rather than disconnected, and restore the wiring if it was unnecessarily damaged.