Double debit not fixed as promised!

on the 1st of Jan I was one of the lucky customers to be double debited by Vodacom. I immediately notified them and was told it would still be fixed on the same day. Later the day I received an sms to notify all customers it would be fixed by end of business Monday. I only had enough left in my account for Vodacom (which is a few contracts), My medical aid and my fuel money for the month. Now my medical aid is in suspense due to it bouncing and still today Tuesday 5 Jan it is not rectified. I phoned this morning to be told it would be fixed but I didn't get a satisfactory answer of what will be done about interest, and banking costs that was now incurred plus my name is made bad at my medical aid due to the debit failing! what happens if my child is sick or we have an medical emergency then I can't go to hospital! Very upset customer!