Can't add a bundle to Data Contract

I have a work iPad that was bought on a 2GB Data Contract.<br> My data needs are higher than this, and I requested a data bundle to be added. <br> The feedback is that \Please be advised that 076****** is a 2GB data contract and a monthly bundle may not be activated"<br> <br> This is an absolute rip-off as this is a data device and I should not be forced to pay the exorbitant out of bundle rates that Vodacom charge...<br> <br> I find this absolutely unacceptable from Vodacom"""