*****ulent Vodacom debits

I have complained about a *****ulent transaction by Vodacom on my account and notwithstanding my ***** complaint registration and the assurance from a call I received from Vodacom that there is a stop on my account to my dismay I find that Vodacom has *****ulently put through an extra debit on my bank account for these accounts in question, how do I stop Vodacom from doing this????? it is blatant theft and appears to me that someone in Vodacom is doing this????