MTN upgrade non-disclosure.

On the 18/11/2015 I visited the Morningside MTN store in order to do an upgrade. I was assisted by Nkosinathi Masoa, a sales person who offered me a new handset for my upgrade. I was told the contract I signed for was exactly the same as my previous 24 month contract with the only addition of the upgraded handset, which i agreed to. On the 24/11/2017 I visited the Greenstone MTN store to do my next upgrade, only to be told that my contract was a 36 month contract. At no stage was I told that I was signing a 36 month contract, and had I been informed I would not have agreed. I then contacted MTN customer care, who informed me that I would need to revisit the Morningside store; I did so on the 03/01/2018 at which point I lodged my complaint, was told I would recieve feedback within 5 working days and was given a reference number 1-***4. After numerous future attempts to resolve this issue I have yet to receive any feedback from the MTN head office, the store or customer care.