High account and no help

<p>We recently received multiple bills about our account being rediculously high! My father thought it was about his calls, since he travels a lot. But when we received a 3rd bill, he called, only to hear that it was because of DATA!! Almost R24 000 because of data? Also, we found out that this was after midnight? Which is impossible. We have uncapped WI-FI at home, on which all devices run. So, he loggend multiple complaints, but nobody has called him back regarding this problem.</p>