Not my proudly South African company - Vodacom

Two months ago I received an alarmingly high bill from my service provider vodacom. I sent an email to “ ask vodacom “ and resent the same email several times as I received no feedback. Last Friday I called the help line 135 and mentioned the bill and the “ data auto purchase “ which I haven’t a clue has come from. They assured me that it has been de activated. My data for the new month has just run out and I have now received another data auto purchase. I am a vodacom client for the last 12 years. I am angry at the lack of transparency on billing the clear lack of care for customer complaints and the sheer arrogance in the manner in which their business gets conducted. To say that I am Unhappy would be such an understatement. This is not my proudly South African company that I once knew. Can someone please remove these data auto purchase nonsense off my account.