Cancellation request ignored

I have been trying to cancel no *** since June 2015. I have sent a letter by fax that was ignored in September 2015. I called in October to check on the cancelation, apparently it was not received. I was told I must complete cancellation form which was sent to me from a call centre staff member. I filled it in and emailed it back along with letter on 01/10. Called on 19/10 still not cancelled. I then cancelled the debit order. Now I get calls and snd that I am in arrears. I have told the staff that called that I have sent cancellation request and your staff say they will escalate it. I am still waiting.wE have now been handed over because Telkom cannot do there job. I have resent the Mail on Friday last week and handed them in at potchefstroom Telkom. <br> Telkom has no coverage where I now live. I have paid for service until October, which I was unable to use as there is no coverage. I think I have given more than sufficient notice to cancel and feel it is not my responsibility to follow up that Telkom staff do there job. I think 7 months of paying for no service is sufficient for cancellation. PLEASE sort this out!!!