I cancelled my account last month but still active

I called the cancellations department on 11 February at 4:52 asking to cancel my policy. I was on the phone with them for over 30 minutes and in the end the cancellation was confirmed and I was told I need to give a months notice so my contract will be cancelled on 11 March. My billing cycle is from 9 of a month to 8 of the next month and I'm billed in advance. But today I'm being billed for 9 March to 8 April when I was told it will be cancelled. I was on the line this morning for 1 hour 22 minutes waiting for the cancellations department again, no answer. First I spoke with a lady called Thabisile Mbatha who tells me that nothing was cancelled. I was given a reference number on cancellation which is ***A and today I got another one for disputes ***4.<br> <br> If you do not believe that I cancelled my account last month please listen to your recordings for either 10 February or 11 February between 4:30 and 5pm. That's when I called and got the reference number. I refuse to pay for this invoice which is billed in advance but I want it cancelled because I don't want to be listed as owing Telkom when I DON'T. You are very quick to install stuff but cancelling is such a mission