Data out of control

I took a data bundle for my office use. My network is password protected, and limited to 25 gig. I then received a statement indicating that my total bill comes to R43 000, ex vat. I queried, and made numerous attempts to resolve the matter. Some downloads took place in the early hours of the morning when no one is at the office. I filed a complaint on hello peter, and all of a sudden received calls from vodacom. I then requested the matter be resolved prior to month end, I was promised this would happen. Despite some 5 emails since Thursday 27 August 2015, I received no response, and vodacom thought it well to debit my account with R 27 000 on 1 September 2015. If I refuse to pay all my services will be disconnected, yet they seem unwilling to assist. I will therefore approach the Consumer Tribunal and Ombud. Pathetic!!!