Still no refund & no proper response from Vodacom!

This is the second time in a month that I am resorting to Hello Peter! I have also Tweeted 4 or 5 times and sent Facebook messages and emails numerous times. Everytime I get a call from a person from Vodacom, there is no resolution - instead I have to explain my shocking situation AGAIN. Vodacom's complaint systems really need to talk to each other and there should at least be a reference number system or something!! I have been promised calls by senior Vodacom escalations people at least 4 times - I have had not one senior person call me! I was billed for a contract I cancelled in December in Feb and March this year again, so in fact it was not cancelled. The consultant at the Vodacom Shop mezzanine level Fourways Mall called Celestine caused this mistake and only calls me back with feedback when it suits her. I have had broken promise after broken promise. All I want is my refund of approximately R3k and for my Vodacom account to be correct once and for all! Somebody pls assist!