No Feedback!

I have been trying to cancel my contract for a month now. I have emailed the retentions department for a settlement amount, which I received about three days after the initial email was sent - I have paid the amount, and am now waiting for confirmation that I have cancelled. I have had Danny Botha call me, and email me asking for my proof of payment, which I have sent. I now, a week and a half later, have had NO response. I would like this matter sorted, confirmed and closed before ANOTHER sum of money is yet again taken from my account (as MTN has taken more than enough from me over the past month). Please provide me with urgent feedback. Thank you.