Not dealing or rectifying complaints

I am very disappointed with Telkom I have been with them for many years always upgrading so this year when I wanted to cancel they called me and offered me a deal for extra 120 anytime network minutes on top of my free Telkom to telkom number calls. But for the past 2 mnths that I upgraded the mins came in and within 2 days the minutes was finished they were deducting telkom calls from the 120 mins. So I called in many times to call centre logged in complaints and cases and to this day no one has contacted me as yet to rectify the mistake and when I went into the store they sad in have to keep calling the call centre but there no use in that ca use they will say I have to wait for someone to contact me and it's been 2 mnths already and no one has contacted me. Worst of all they are charging me now for my any network calls I make.