Over charged on monthly contract

Good day.<br> <br> I upgraded my contract with Vodacom in April/May 2015. I confirmed with the consultant (Bremley) that handled my upgrade numerous times that the only amount that will be going off my account on debit order is the R799 for the contract. (obviously excluding additional purchases of data etc.) After 3 months I realised my account is higher than usual and checked my statement to find out that there is an additional charge of R350 for my handset. I queried this with the online dept at the end of July, Was referred to Bremleys manager Cindy, who confirmed that they would listen to the recordings and get back to me. After 7 weeks I had to follow up with her again, she confirmed that they have listened to it but no one has given me feedback wrt the outcome. Since end Sept I have spoken to more than 6 consultants from Vodacom who have confirmed that they would send my recordings to a Vodacom store for me to listen to it. Not a single consultant has been able to deliver on there promises, I need to continuously follow up with Vodacom. I have been a very loyal customer for more than 12 years. I will be cancelling all my contracts with Vodacom if I don't get feedback by 20 Nov.