Vodacom is ****ming me to pay R4000 of data.

I am on vodacom red premium (unlimited voice calls and 15 Gig data). Monthly premium is 1,352.78. In December my bill went up to R3,971.67 which I did not understand why as I have been on this contract for 2 years and this fluctuations never happened. I called the call centre and they said I am charged out of bundle usage meaning I used data above 15G. I don't understand why only now this is happening and the amount of data used is above R2000. That is ridiculous and no one can use that amount of data regardless of if it is out of bundle or top up. How many Gigs are worth R2000? I queried this and requested that they stop and change the line to top up. I then bought myself 10G of data as top up. To my surprise, in January the statement came out and I am owing R6700 of which when I called I am told R4000 is on data usage that I used above the 15G. This surprised me because I requested that they stop this in December. The consultant says he can see the request but he doesn't know why it was not effected. I requested the call recordings so that I can forward to my legal team to also understand how can I be charged R2000 for data or R4000 for data when I am only browsing using my mobile phone.

Please note I will not pay this amount and I am requesting that you cancel this contract because clearly Vodacom is *****ing people. I am willing to also take this to media if it is not corrected. This is totally unacceptable and you are ****ming people.

My contract doesn't even include a device but I must pay R6700???