***** debit/amount ( sim and phone supposed to be blocked)

Hi Vodacom, please tell me how possible is it that I lost my mobile phone then I called your customer care to block both the line and handset, to my surprise the lost phone and sim is still very much active and making airtime advance under my name. Whereas I was told by your agent the sim and phone has been blocked.

Is this not ***** on your side and why are you debiting airtime advance from a to be blocked line and phone?