Horrific service - can't get itemised billing

I had a top up contract with Vodacom and requested my itemised billing on 2 October 2015. I waited patiently but then again started to fax and email documents (such as copies of my ID and written requests for this information to be emailed to me) requesting the itemised billing for one month from Vodacom. I then received documents from Vodacom, which included forms that a commissioner of oath had to sign, which i again filled in and faxed and emailed. It has been more than a month and a half and despite all my effort and various telephone calls to vodacom's help line - I still have not received the itemised billing as requested. I have spoken to managers at the call centre and my local store in Mossel Bay also send documents through requesting the itemised billing - but nothing is happening. I am so frustrated and really don't know what i can do anymore in order to be helped here.