Cant cancel contract/ inefficient call centre

Dear MTN<br> <br> This is my second complaint and still not resolution. I made two requests to cancel my contract and be moved to prepaid, still nothing is done. I requested for a bill statements to be sent, still nothing. I requested for a call log for the data I received when I took out the 2nd contract, still haven't received anything.<br> <br> I called your call centre on Saturday the 27th June, I was on hold for 45 minutes, eventually when the agent answered she just kept quiet after the introduction. I am sick and tired of this terrible service and I want out NOW. I have been with MTN for more than 4 years and not once have I owed you money, I do not deserve this treatment.<br> <br>