They just don't cancel my contrack

I emailed to cancel with Telkom. 30 June 2015, I sended my Cancellation forms to 2 people, never responded to my email. 2, 8, 9, 14 July 2015 and no response to my emails.I called them and then they asked me they got the emails and then they wanted to know if I want to upgrade or cancel but I send them a cancellation form now they asking me this then they said I have to send it again and it will take 21 days after this 21 days still nothing done I called again and I must wait another 21 days then I asked to speak with the manager on 19 August, Jabolo thr manager said I must sent him the form and it will be canceled in 3 days, called again the 26 August, still not canceled, they said they are busy and will take 21 days, I asked to speak again to a manager this time I spoke with manager Duma, again I must send cancellation form and he will see what he can do and then he will come back to me. 28 August, the manager didn't call me back, I phoned the manager and then he said that it is not done yet and then I told him I am now done, I'm going to hellopeter but he begged me not to but nothing is done yet. I'm getting fed up..