******* charges?

My Vodacom 3g tax invoice (03/09/2015) indicated that I had more than R3000 of data charges. However when I called the customer care centre to query the invoice the call centre could not provide an itemized bill that showed that I exceeded the 2 GB contract and was being charged out of bundle rates. Despite this, Vodacom still debited my account with R3500!! I require urgent/immediate itemized bill that shows EXACTLY how much data I used, on WHICH DATES and the costs attached to these. I was told to wait until Monday so that the system can update the full account because currently it shows I used 1GB up until 27 Sep. HOW CAN VODACOM CHARGE ME R3000, TAKE THE MONEY OUT OF MY ACCOUNT AND NOT HAVE CLEAR PROOF OF THE USE OF THIS SERVICE?? I require immediate information about my account, please.