**************** - Vodacom keeps Billing after account has been closed for 6 months+

I reported my Vodacom 3G Device as ******/Missing in September 2017, and subsequently CLOSED my Vodacom Mobile account 09/2017. There has been no activity on theis (Closed account for 6 months) but Vodacom suddenly started Billing me via Debit Order for the last few months - even though I have NOT been a customer since Sept 2017; I have NOT had a Vodacom 3G Device and no active account since 09/2017 ? This is **************** - I demand an explanation and a REFUND of the money you are taking *******ly from my account!