Very bad, frustrating service from supersonic

I have app**** for fiber through supersonic and installation was done more than two weeks ago but supersonic can activate the internet. The service is very poor and disappointing. I have communicating with them and they promise to sort out the problem. I don’t receive any form of communication except the what’s app which is not effective. I want to cancel the agreement and I don’t think it’s fair that I have to pay for claw back fee they told me about. I am so frustrated and when I try calling them and immediately when I explain my frustration the consultant will either drop the line or transfer me back to the queue and I have to hold again. I don’t want their services no more.