Customer service hangs up on me!

I have a 3gb contract with Vodacom- recently my bill has been 10 x more than what I would normally pay and I am not using the data any differently and I have checked my device to see where this data could be going and it is not evident as there is nothing out of the ordinary- I don't watch you tube videos and I don't download.<br> <br> I called to enquire why my Bill is so high and I explained the above to the consultant, she beat around the bush for a while, finally she admits- that she has no idea why my Bill is so high- she cant tell me why my data usage is so high as they don't have access - so I said okay this is a problem because I am telling you I am not using all that data- she with a huge attitude asks me- what do you want me to do- I said tell me why Am I being charged for all this data that I am not using- she said she cant - so I said then give me my money back- she said not possible and she slams the phone down on me.<br> <br> Very professional Vodacom. I want an answer on my Bill! If Vodacom does not get back to me with details on my enquiry - I will consider that company a bunch of ******* and I will have to take legal action.<br>