1GB data contract - out of bundle data charges??

Out of bundle data charges have been app**** on an account which I was under the impression was supposed to only allow the preset amount of data (1GB) and any further data bundle purchases.<br> <br> The contract was specifically acquired to be used only for data and only allow for the set amount unless I specifically added a new bundle.<br> <br> This account is not supposed to allow for out of bundle data.<br> <br> I asked vodacom customer care to stop out of bundle data but apparently the useless software system can only cap based on usage.<br> <br> Now I cannot even use a bundle that has been added.<br> <br> This is totally unacceptable and should be deemed *****.