No response from the NCR

I am fed-up and have no clue what to do anymore. The NCR took over my case, after my debt councilor decided to start deducting money again, after I had paid off all of the debt. After 2 years of struggling I referred the case to the Ombudsman who eventually referred it to the NCR. It is now 4 years since my last payment, and my name is still black listed as I do not have proof that I paid my debt. I have tried contacting the person who dealt with my case at the NCR, but NOTHING! His telephone number doesn't exist. Tried phoning the call center ..... NOTHING! When I do get through on a number, as soon as I make my selection to talk to someone in the correct department, the phone goes dead?? I am out of ways to deal with this. Is the NCR not supposed to be there to assist the consumers?