No light at the end of this Mtn tunnel

My contract was due for an upgrade and I decided to move back to prepaid, the papers was send in to cancel my contract end of November 2015 it is now been two months and five reference numbers later , I am working directly with my MTN in the are ( bela bela) she phoned Mtn and logged various complaints about my contract not being moved to prepaid, every month I still receive my data and airtime on the device that I am no longer able to pay because I cancelled it November 27 2015 still I am being billed at the end of the month.<br> <br> I went to MTN again this morning to find out what is going on my phone has since been suspended because I exceeded \monthly limit\" I cannot use my phone or load prepaid money to my device and still there is no answer from MTN , when she phoned this morning they just gave another reverence number and they are not sure what is going on with my account. I have since decided that I have waited long enough for explanation on why my contract has not been cancelled and if there is no answers by this afternoon I am simply going to get a new number and move to vodacom.<br> <br> Mtn has left a very bitter taste in my mouth!"