Non existent customer service

I would like to say they have bad customer service, but to say that you have to get some at least. There is no way to contact Supersonic, besides their Whatsapp Number which doesn't really do anything, and then contacting them yourself which costs money from a mobile. And then when you get through to their call center agents, they can't really help you with anything.

I cancelled my account with them over whatsapp on the 31ste Jan, to ensure I give 1 month notice, the reply on whatsapp said someone will phone me back, after 5 days no one phoned me, so I phoned them, when the call center agent told me I have to send an email to cancel, so I did that and stated that I have been trying since January. Needless to say, it was the 5th of the month, so they ignored that I had already cancelled from Whatsapp, and now I am liable to pay for another month. Makes no sense. So they suck in their business processes and at customer service and the customers have to pay for it.

I phoned them again to sort it out, and asked the call center agent to get a manager or someone with more authority to help me. The call center agent said her manager is busy and will phone me back within 24hours... it has been more than a week..