Ridiculous data fees

At 21:44 yesterday I received an SMS from Vodacom notifying me that my general data on my number had run out. I only opened the message at about 23:00 that same night. Between the time I received the message and the moment I switched off data using apps all I did was spend say a total of 10 minutes on Whatsapp and no more than 5 minutes on Facebook. <br> <br> When checking my invoice online, I receive the shock of my life when I realise that by Vodacom's billing standards this time equates to a total of R1 070 worth of data usage. When my data normally runs out I purchase 250MG worth of data (which costs R59.00) this normally lasts for a couple of days mind you, with me doing more time on data using apps than what was mentioned above. <br> <br> It is not the first time I have queried Vodacom's data charges and every time I do I get half ****d responses from them which never really provide adequate responses to my query. Can someone please explain to me how on earth is it possible to rake up up to a thousand rand worth of data charges in such a short space of time???<br> <br> Vodacom seems to be taking chances with its customers and taking us for granted.