Vodacom Fibre

I have been calling and sending Vodacom emails since last year trying to resolve a free fibre service that they installed in our new complex for 12 months Hudson in centurion. On my application form i clearly outlined that i do not want the free service extended in a month to month contract. Ofcourse this was not actioned and 10 months down the line i am trying to cancel it and ask them to reverse the charges, almost 15 emails later they close the call to say billing has stopped an no reversal of charges, im still getting a statement of a bill outstanding, i cannot believe how *********** the staff can be!!!!!