Charged for old handset

I recently upgraded online, which I was entitled to. . . I was informed by the consultant that I would be charged a once off admin fee of R150.00, which I happily agreed to. Towards the end of the month I logged onto my vodacom account and found that I was being billed for my previos handset. I then called the sales department advising of them such, and was then put through to Shaun Thaver (Manager) to assist with my query, he advised that he would need to hear all my conversations regarding my upgrade only then he would advise the way foward, after receiving no feedback I called the following day for feedback and was advised the consultant was at fault and the amount would be amended before my debit order could go off. The following week I received an email from the above mentioned confirming the credits were done successfully. Only to find out on the 1st - the full amount went off, I then sent an email to him asking what had happend only to receive no response. I then called sales dep and Shane (apparently 2IC) advised he would need to investigate and get back to me..Up till this day I have received no feedback from Shane nor Shaun. I keep on calling. . . but UNSUCCESSFUL!!!