VODACOM fruadulent port, offers no help to pensioner

My 78 year-old mother had her pay-as-you-go Vodacom number **********ly ported twice in the past 2 weeks. She did not stop the port in time and her bank account was emptied by the **********. She has been advised to contact the Vodacom ***** department which she did. They would not assist her as she did not have a reference number for the problem. I MEAN REALLY VODACOM. HOW CAN YOU NOT PICK UP THE ISSUE AT HAND FROM HER CELL PHONE NUMBER. Do I need to take to social media to warn pensioners that Vodacom is not helpful or sensitive to them. Would do some serious damage to your repuation...