No Wifi and no assistance to get the matter resolved

We've been struggling with our wifi for over two weeks now. You call the Supersonic number, hold the line just for someone to tell you to restart your router. After so many calls, they eventually sent out a technician, he informed us that there's a fiber fault. That was never sorted out. The next day Supersonic phoned back and did a router restart like many times before. While on the line you have wifi. The wifi only lasts for about two hours and then it is off again. We keep on going in circles with no wifi and phoning Supersonic. The end of the month we will receive a statement that will require a payment for the FULL MONTH, but we've been struggling with NO wifi for more than two weeks without luck!!!