Shocking service from Supersonic

Absolutely terrible, if not non existent, service. Been calling the call centre for the past 5 weeks to cancel my subscription. Its only been a month I am with Supersonic but what I signed up for is not what they are delivering. 3 case numbers have been cancelled by Supersonic themselves without resolving the issue. The tech guy was to come out to my house to figure out why we are not receiving the speeds we were promised, To date no one showed up and attempted to make contact. I am paying for their uncapped service with fast speeds but its all ****. Nothing is consistent and speeds are very, very slow. I would not recommend Supersonic and would rather revert to Telkom. After consulting with Supersonic before becoming a customer, I was promised alot but receive nothing of the kind. They won't even cancel my subscription. They dont care. NO follow ups. No customer service etiquette.