Supersonic, not the way to get connected

I was a Nepic Client for over a year, had no issues with my fiber connection whatsoever. I received a notification that my account has been sold to supersonic, i had no choice in this matter, i am now a supersonic customer. I have to date received no contract from supersonic, i have spent over 4 hours on a call to their technicians, (only 4 calls), i have tried contacting them today to have my account cancelled, and after being on hold for half an hour, speaking to a consultant, put on hold again, and then have the line disconnected from their side, I am in a state of fury... i want my fiber cancelled immediately, i have no contract with supersonic and my nepic contract is now null and void as they do not exist anymore. i would like a senior person from supersonic contact me so we can get my line cancelled as soon as possible, this has now cost myself and my wife more money this last 3 weeks than we can afford during this covid lock down period.