Trying to cancel an account since Nov 2015

I decided to switch to Telkom LTE and as such wanted to cancel my Telkom ADSL account. I first went to the canal walk branch in Nov 2015 where I filled out the necessary forms. I then found out after the 30 day notice period that they had only cancelled the line rental and not my actual ADSL account. I have been back to the store on multiple occasions over the months, filled out the forms multiple times and the account still hasn't been cancelled. I'm being billed for this every month though its no error of my own. This has been dragging on for nearly 6 months now. The last time I was at the store they told me that I would still have to give another 30 days notice. Not that it mattered because they didnt cancel the account anyway. This is simply not good enough. I'd like this cancelled immediately and I would like to be refunded the money that has been taken from my account. This is not the first time that I have had problems with telkom and account cancellation.