Incompetancy of MTN.

The worst service ever. Trying for a year now to cancel a contract after they informed me last year December that the contract was upgraded which we never did as we are not using the number for a very long time. I tried one of the shops on which I waited 4 months for a reply or some information. The lady apparently reported the case at the ***** department. Upon follow ups during these months she just told me that it takes a very long time some customers wait even longer than 4 months. After getting fed-up woth this she referred me to the main branch in Bloemfontein. There the lady justvsend an email to her manager to report the situation. This was about 6 weeks back, and still no one got back to me and I am still paying an upgraded contract for someone else! I am so furious as I do not have time to go up and down during the day. No feedback, no service at all. No one calls you back. I really do not know what to do anymore. I am so fed-up with MTN. I please need some advise as i clearly cant get anything done by going by the branches as the people seems to be *********** and can't or will not assist you in anyway.