Two weeks in and I'm already regretting Vox.

Since my fibre line was installed 2 weeks ago. I have not had a single day where it has worked properly. I have phoned the Technical department numerous times. I haven't been able to do much with my internet never mind watch tv. I have asked numerous times for a technician to be sent. Nothing. I refuse to pay the pro rata invoice as I actually haven't had a working line. I have done countless speed tests for which I have all the results. I ordered a 50mg line. I can't do anything with it. Please sort this out.