Vodacom debits bank account without authority, probably from thousands of "customers"

I cancelled a mobile data with Vodacom and they continued to debit my bank account 3 months after the event. Vodacom promised to send me a copy of the call where I explicitly cancelled the contract, but never did. This is not the first time that Vodacom have billed me *******ly. I will never use Vodacom ever again, and would never recommend them. They are corporate ******* who hide behind faceless call centre agents who are trained to be obtuse or ***********. Nasty mentality! Vodacom - please take this as a further instruction to stop taking payments *******ly. I will not be phoning you again only to be told that I will be called back ... which has never happened.