I have been on the phone for the past 20 minutes waiting for someone to answer in the cancelations department for MTN

I have been on the phone for the past 20 minutes waiting for someone to answer in the cancelations department for MTN. All I want to do is cancel my contract that has already expired. So that o don't get deducted for it anymore I am not happy for this inconvenience. Just as an added note this is the second time I'm calling for the morning and the second time that I am waiting this long Two weeks later: Eventually after being put through to the billings department a man named Wandile said he would log a ticket for my cancelation to be done immediately and he said someone would phone me. Nobody has phoned me and my account is still not cancelled. I do not want to be billed for something I do not want anymore.