Why am i still being bill, I cancelled my contract

On Wed 4 Nov I logged a complaint how MTN **********ly debited my account after I cancelled my contract March 2015. <br> <br> I got some automated response that my request was sent to retentions supervisory team for assistance. First of all, I don't want to be retained for any form of contract with your ****ty telecommunications company. All I want is for you to refund the money that was taken from my account without my consent and for you fools to confirm that my account is CANCELLED.<br> <br> It is now 16 days later and not a response from any person from MTN and now its getting close to month end, are you idiots planning on retaining my account details and **********ly withdraw funds from my account again. <br> <br> I want this **** sorted by the 25th November and I don't want to get another automated response from you fools....SORT OUT MY QUERY ASAP<br>