Vodacom *****ing money from their customers

I requested a premature cancellation quote early January 2020. I received the quote, went into a Vodacom shop in N1City, Cape Town and made the payment. The consultant mailed the proof of payment as well as the request to cancel the account to Vodacom. Now for the second month in a row, Vodacom is deduction money from our account again. I am currently in New Zealand and have phoned on two occasions where the consultant assured me that the account has "now" been closed and that the deducted moneys will be paid back. Please will someone urgently assist as Vodacom is actually *****ing my money now. I can now only be contacted via e-mail.