Still not refunded for double deduction!!!!!!

I was double debited on the 31/12/2015. Vodacom assured customers that all refunds would be made by the 04/01/2016. To date, I have not received my refund.<br> I have contacted the Call Centre since the 03/01/2016 and spoke to many consultants including team leaders, some of which promised to call me back with a resolution. No one has called me back. Each consultant I spoke to gave me conflicting information. <br> In desperation, I called Vodacom's head office who referred me to the 'Supervisor Call Centre'. After speaking to three individuals I was asked to prove that I had not been refunded. Upon presenting my statements showing proof of the double deduction and lack of refund I was told, to my surprise, that I had been refunded. My statement clearly evidences otherwise. I was then told that my query had been escalated to their Finance Team who in turn escalated it to their IT Team. Still no feedback!<br> Vodacom still owes me R2849.78 and I want my money back now. I have reached a point of desperation as it is clear from my interactions with Vodacom that there is a complete disregard for resolving my query in a fair and reasonable manner as it seems that no one is prepared to assist me.