Cancellation of contract

I have been trying to cancel the contract for more than a month, the 808 number is not operational. The MTN store in Galleria Mall tells me to call the 808 number. I have drawn a blank on progressing this query, and have had no feedback or communication. I have a reference number for the cancellation ***<br> <br> The cell number is ***.<br> <br> Such poor service, its easy to sign up, but hell of a difficult to end the contract. I have to keep on paying for another month.<br> <br> I also have had account queries which have not been sorted out, Overcharging. Charged twice for Blackberry Internet.<br> <br> Mike Matthews<br> <br> Contact number ***