No feedback, no communication, no e-mail

I cannot understand that Vodacom doesn't have a contact e-mail address. I have a complaint and wanted to explain the events in sequence but can't do so! Unthinkable. I noticed after my August statement that my account was higher than normal. I queried this with Vodacom telephonically and nothing happened. On 27/9 I went to the Vodacom shop at Atterbury Value Mart and we noticed that a cell phone appears on my account that I know nothing about. I went to the police for an affidavit and a lady by the name of Stephanie (Stefnie?) reported this to Vodacom for investigation. I contacted her last week and she rep**** that she is not getting feedback from Vodacom. Last week I phoned Vodacom who promised to get back to me. Needless to say, they didn't. I the meantime I am paying an inflated bill.