Bad Customer Service and billing errors!

<p>I just got debited an extra R 2,084.89 on my account from Glocell- I have an infinity contract with them- that I'm already paying R 1525 per month for. They claim on my bill that on the 31/03/2017 at 22:08 I spent that amount extra on data. I had no data at all that evening!!! I had to sms and phone instead of using any apps that use data- since I had none. How can they send me an sms saying I have no data and then charge me an extra R 2000 and still not allow me to use data! Someone please explain and sort this out!! </p> <p> </p> <p>I have tried phoning 4 times this morning. I spoke to someone once- who transfered me and then ended the call.</p>