Unhappy customer - Please release my line.

Good day

I cancelled my contract with supersonic on the 7th July 2020. I have been calling so many times trying to get my line released, I am not getting any assistance at all and the reason for my cancellation is because of the poor service I was getting from Supersonic. Can you please release my line, if there's any amount I need to pay for the cancellation, please send me an invoice. The sooner I am rid of you, the better.

I have never in my entire life dealt with such an unprofessional company, All my reviews that I took to hellopeter have not even been dealt with to show that you really don't care about your customers.