can someone please help

Can someone please assist with updating the debit order details on this account. I have called and called but its not getting done. I'm the one who is paying my dad's medical aid. I have sent third party consent forms but still I'm just getting no service form Discovery. Instead you guys are continuing to debit the incorrect account. I resent the documents again on Tuesday only to be told to resend again. Can someone call me or something. This is very frustrating.