Worst service ever

I cannot believe that it has taken now 10 months so far, to try and fix my ***** problem and refund my money. My data line was **********ly upgraded and an iPhone 6 taken on my name. This account was on sponsored billing but any amount over comes from my own account. After 9 months I have managed to get them to stop billing me and now I am battling to get my money back. The person I have dealt with has now stopped answering my calls and told me that 4 signatures were needed to reimburse me. Then there was a system problem and now nothing. I am talking about over R4000, which Vodacom does not seem to care that this is not their money or my companies but mine. I am at my wits end. I even put a report on Facebook and no one looked into that.