Vodacom overcharging & unprofessional consultant.!!!

Account No: I***-7. In December a consultant called me to offer a lower contract as I was not using all my data. They recommended a contract from current R659 to less with less data. I agreed as who does not want to save money? From December until not I have been billed R859 every single month. I have called numerous times to rectify this error. Finally, in May they did an investigation and agreed it was an error on Vodacom side!!! I requested that my account be credited, the consultant told me should could not credit the Vodacom account but instead HAD to credit my bank account. I gave her my bank account details. Up to now i have not received the R800 credit promised to me. I called this morning understandably irritated just to get a consultant PUT THE PHONE DOWN on me!!! This is unacceptable!!! I called back, finally got a helpful consultant who understood my frustration and said she will look into this but it will take another 14days!!!!!!! Calls are recorded, please check and call me back, I want the name of the consultant who put the phone down on me. I am the client and I insist he be reprimanded!! If he cannot deal with an irritated customer possibly, he needs to find a new job!!!! My next step is Facebook and I will continue until this is sorted out!!! Why do i need to continuously call to have the same things sorted out and everytime i need to explain the story over and over. What is the point of ref no????????