Bad service delivery once equipment is installed, and you signed up.

I signed up with Vox in December 2023, having my fibre line installed end of January. My tvs are all on wifi. So I called them early in Feb to say that we cannot watch tv in the main bedroom it is buffering all the time, and it never happened with the old service provider. They extended the range and worked on the router. To no avail, I contacted them again, and they did it again. Said I must reboot and send screenshots, which I did. Yesterday I phoned again as I did not get any feedback, on the line with them for 40minutes. Said they are logging a call for a technician to come out. She dont want me to hold on longer but as soon as the call is approved, I will get a sms and they will then call me to say when the technician is coming out. Its a day later, I have not received a sms yet, and no one called me also. Which means for another weekend we wont be able to watch tv in the main bedroom. The account manager contacted me in seconds when I wanted to sign up, but now he is just missing in action. Dont answer my messages. I am utterly disgusted with this type of service. I was supposed to be better off with the fibre but we are in fact in a worse position.