MTN Upgraded my contract without my approval!

I took out a contract with MTN on 2013-05-20. I have currently used this contract for 18 months and i am therefore approaching my upgrade / termination period.<br> Last year in August my line got disconnected, I was reconnected again in December 2014. The problem is when I got reconnected for one reason or the other MTN decided to upgrade my contract without my knowledge or permission. Although my number stayed the same according to the system I upgraded my contract in December 2014. I did not take out a new contract, I got reconnected on my old (already existing contract). Because of this error according to the system i took out a whole new contract and i am stuck with it until 2017. This is simply not accurate - my contract was 24 months and i have paid 18 months of that contract. I am left with a maximum of 6 months to pay this contract off. <br> MTN has clearly taken it upon themselves to upgrade my account without my knowledge or consent. I do not want an upgrade, I did not receive a device for it and I sure as hell did not sign for this. <br> MTN has also taken it upon themselves to change the details of my contract without my knowledge or permission - this is unacceptable. My original