Vodacom not sorting out my query

In May 2014 someone opened a ********** account under my name at Vodacom. I noticed this when a debit order went off my Capitec account. I immediately called Vodacom and they asked me to send an affidavit, copy of my ID and it must be signed 3 times. I sent these details more than once from the 27th of May 2014. Till today no feedback. I went to Vodaworld and was assisted by Robin Baartman and he said the ***** department was slow to get back to him so I must email him for details, that was in July 2014. I did so and till today no feedback. When I did my credit report in October 2014 I realised that Vodacom has listed me as a bad payer as I am not paying my account. The ********** number in question is ***. Till today this is still under my name. I called again in October and I was advised the team dealing with the issue will call me back but I am still waiting for that call. When are they ever going to sort this out because it is ruining my already bad credit record.