Shocking lack of service

Due to emmigation, I called Vodacom's cancellations department in mid Dec- I received an early cancellation quote (due to me ending my contract before contract end date). I followed ALL intructions given to me, and paid R11 600 to Vodacom on 18/12. I left the country on the 30th of December with the knowledge that I was paid up and did not owe any service provider anything. Low and behold, the cancellation was not done and I recived the shock of my life when a bill fo almost R92 000 was debited from my account for Feb for local data usage- this is while I am now happily sitting in Perth. Someone unfortunatley is making use of my number for data, but I can assure you it is NOT me- had Vodacom done their duty and cancelled the contract as INSTRUCTED we would not now be in for the fights of all fights, due to total NEGLIGENCE on their side. I have now called about 6 times, each person passing me on to the next with a don't care attitude. FIX this mess, acknowledge YOUR negligence Vodacom- Kabelo from the cancelations department has assured me of answers by tomorrow. Lets see.