Incorrect disconnection

Phone disconnected after payment has been made, and EARLY. Then when I phoned, I was asked to give proof of payment, which I did. and STILL no reconnection, nor explanation. All I want to do is cancel my two contracts - I have been with MTN for the last 10 years if not more and all I have had is problems over the last two years. I am done with the poor service at George branch and I am done with the lack of communication between MTN online and their branches. With all the competition out there its time you upped your game!!