Supersonic fibre is a **** !!!

When I joined supersonic I was told that my contract is uncapped and I chose 20/20 , it was to my surprise my line was cut off October 2021, I have made numerous calls, emails with no help. On the second week of October I decided to cancel my contract with immediate effect reason being I felt Supersonic failed to honour our contractual obligations. I was then told that my line was abused meaning I have exceeded the allocated data. And I then received an email saying that my contract will be cancelled at the end of the month meaning end of October. Come end of October I received a bill account for me to pay for the service of October even though my line was off. It is my opinion that I didn’t dishonoured the obligation it was supersonic and why should I pay? And now they are refusing to release me to join other service provider. I really need help here please 😡