Disgusting Vodacom client service!

I have now officially reached the end of my tether with Vodacom. As discussed in length with Mpho Zikhali (poorest/ most arrogant team leader on the planet who gave me a wrong e-mail address and refused to give me a contact number for her) and about 4 other consultants,i have has a certain amount debited off my account for a very long time before and after I ported out my cell number to MTN. The problem is that this debit order is linked to another number I do not know and have never used. Your client services department noted that the date has never been used and that it was a top op for data. That top up was never requested by me ever!! I was a contract client and I always was so I would never have asked for a top up. I also cancelled this debit order in mid Jan and still got debited at the end of Jan which is infuriating! Vodacom, shame on you for not caring! Your staff have committed to call backs every time i have called in and to date i have not had 1. Now i sit here no closer to a resolution or answer. One is constantly stone walled and denied any access to management to take ownership of the problem.