Purchase of data bundels

I discovered that when I phone *111# and I request data bundels, that I was disconnected. I phoned the call centre that told me that a e mail will be send to their technicians and I will have an response within 48 to 72 hours, and of course, its now more than a week, and still no call back, so I am stuck, can't use my data, because then I am out of bundle time. Please help, as it seems this might be the only way to get their attention!