Billed for non-existent services

Vodacom has been billing and charging me for years for an error made by a vendor. When I raised this again, - no response. I have since upgraded, and the very same number, the one I was assured would be investigated—has been billed, and yet I cannot use it. I was told that the SIM and contract would be active as of the 1st, but now I am being told I was ill-advised and that I have to do MORE to access services I pay for... but have not received for 4 years! 4 years! I am waiting for them to say, but we tried to call you—but letting a call ring once and then putting it down, is not service. This is daylight *******, and if I am not refunded for the years I was pushed from pillar to post, and now for being charged for services not received because of being incorrectly advised, I am reporting this to ICASA, and I promise to make it my life's mission to troll every single post telling people not to go with Vodacom. I just put the number in question as the reference number. Let's see them try and call me on it... COS IT DOES NOT WORK