Data promised not delivered in upgrade

<p>I recently upgrade my contract with Vodacom, beginning June. I was told of this great deal with 600 voice minutes and smses and 1GB. What really got the deal for me was that I was told that I would receive an additional 1GB as there was a promo for the next 24mths. </p> <p>Well my phone says I've used 778MB and now I've been cut off. I called the call centre and they claim I have only been given a deal for 1GB. I need the call where I accepted the contract to be retrieved.</p> <p>I am now without any data and cannot get my emails or whatsapp. This is a work cellphone.</p>