Misleading call centre agents - Consumer Complaint for Vodacom - Head Office

Two weeks ago, I received a call saying I was due for an upgrade, I was told that I was going to be paying R250 for 100GB anytime data, but the consultant mislead and lied to me because I only got 6gigs of data this month and my bill says R484, I have made numerous calls to the call centre but I haven't had any joy whatsoever, this is actually fraud because it is not what was explained to me by the consultant and even worse I repeatedly asked are you sure about what you telling and she said yes but now I have a problem and I'm stuck without data and Vodacom does not seem to care at all