Terrible Poor service

My Ref is ISP *** I have lodged a fault on the 2023-06-27 about my Wi-Fi that is not working after Vumatel technicians were busy in our line apparently they were connecting another person and our line was affected. This today it has not been resolved. I am very upset with thier poor service, they do not even answer thier calls. I would like to have thier physical address.