Unable to cancel a contract

I have been trying to cancel my contract since 31 July 2015, when the phone was lost. I began by asking the Westgate branch to assist on the same day. I was told they can only help with upgrades, and that I must call retention's. <br> <br> Since then my various calls to 808 have resulted in consultants putting the phone down on me 3 times, advising me that they can't transfer calls, that they are experiencing technical difficulties,I have also been put through to the wrong department time and again, and been given a fax number to dial.<br> <br> Since my Mtn sim is suspended, due to being lost, all these calls have been at my expense. Tired of wasting my airtime, I email customer service on 9 August (Reference Number: ***3). The response as expected was to call 808 again .<br> <br> I have tried my level best to fulfil my side of the obligation, by providing notice in person, telephonically and in writing. If I continue to be prevented from cancelling, I will stop the debit at the bank, and let the consumer tribunal decide who is in the wrong.