Dependent Removed from Medical

Approximately a month ago, my wife was notified by our pharmacist that she was no longer a dependent on my medical aid. I went into Discovery's offices (Walk-in Center) and discussed the matter. I was informed that DH will call me back. No calls received from DH. A week or two later, I again called DH and they said they will remove the person who was added onto my medical aid. They again promised that they will call me back. No calls received from DH. On 6 April, I again called DH, same 101 questions and explaining the same thing over. The agent did call me back. I then mentioned to him that my wife is not on my medical aid due to this issue. I asked him to get her added, because if she is in a accident etc, then DH will not cover her. He also agreed that this is true. I insisted that he makes a plan and get my wife added to my medical again. He also promised to call back. Again no phone call or update. The fact of the matter is that some woman is added to my account who I don't know and not sure what money she has used from my medical savings etc. My wife does not have any medical aid cover, should something serious happen to her, DH will be held liable! When I phoned in for the second time, the agent assured me that the problem was fixed. Only to be at the pharmacy again to get meds, and my wife was not on DH as a dependent. There is details on DH system that they can see all the calls and conversations held. So I would like to have this matter resolved by close of business on 10 April whether an identity theft issue or someone with trouble fingers.