No one knows whats going on

I don't even know how to review these people. I got my fibre installation 7 days ago and my internet is still not working. I phoned so many times and are in constant communication via email with them but nobody seems to know what the problem is or how to fix it. My line is apparently active but there is no internet access. Everytime someone comes back to me they tell me they escalated to problem to someone. But no one fixes the problem. I got my pro rata invoice 7 days ago. And there is no way im paying that invoice. This problem is not getting fixed. I asked many times to speak to a manager but I don't even get a reply. I do not know what else to do and this frustrates me. Wondernet will phone me and nothing will happen. They are absolutely useless. If they cannot fix this problem I am forced to cancel the subscription and get another ISP. I am saving all my communications for the court of law as proof that I tried everything in my power to resolve this and will NOT take liability for the costs of their installation. I will however remove the devices and cables carefully for them to collect.