Thieving Telkom!

So, surprise surprise, here we are again with Telkom! I am trying to cancel my DSL line with them, however, they say I cannot put in a request for cancellation until the service provider cancels the service. I understand that I just want to put in a request to cancel the line so that come month-end, the cancellation request is there and Telkom can go ahead and process the cancellation. When I spoke to Zinhle Zwane via chat, firstly, absolutely useless, no customer service or product knowledge. When asked to speak to a supervisor, I get told to call a number, no one can call me back as it is an inbound and not an outbound call centre? This is Telkom, how can you not call out! So I cannot put in a request to cancel my contract with them, yet they will still charge me for a service which I won't be able to use as I won't be living there anymore, how is that even legal? Also, the whole cancellation process apparently takes 60days to finalize, yet my contract states 30days notice? On top of all of this, I cannot get a reference number for my issue and I must just take the name and surname of the chat person and use that? ***! How can there not be a reference number for a service query request? I AM DONE WITH TELKOM AND THEIR USELESS SERVICE!!