No communication from Supersonic since November 2020

I have been busy with Supersonic since last year November to sort an issue. With absolutely no means of communicating to a human, as their whole customer service is based on automated and robotic response. I have send several emails to your cancellation email and only received automatic response back. Please use this as my notice that as from 1 September 2021 I will be migrating to a new service provider. Seeing that I pay via eft, I will make my final payment for August usage on 30 August 2021. I will disconnect your router and will not be liable for any cost or usage after 30 August 2021.