NCC Business Services XXXX has re-initiated trying to collect a debt I do not owe. During XXXX I provided response to their collection attempts, and ultimately provided evidence to the XXXX credit reporting agencies XXXX and all XXXX credit reporting agencies found in my favor and determined that the debt collection was not valid. Now NCC is again trying to collect this same debt, about 1 year after I 've already had the credit reporting agencies dismiss this as an invalid debt and a debt that I do not owe. The company has harassed me and called me repeatedly, and yesterday XX/XX/XXXX even called my place of employment. I called them back and explained never to call me and to not call my place of employment. The representative was extremely rude and I had difficulty getting them to stop talking so that I could explain that this debt has already been proven invalid but they threatened to report it to the credit agencies again. I asked if I needed to contact the original place that levied this claim and they said no and that it had been " turned over '' to them. I have already proved I do not owe this money and now they are starting to harass me all over again. I have mailed in my credit reports showing the dismissal of this claim of debt to NCC as of this Monday XXXX XXXX ) so I did provide them written notice that I disagree and that the debt is not valid. I explained all of this on the phone but the representative was loud, would not listen to me, and said that no matter what that I owed this money and that I did n't know what I was talking about. He even said that since I work for XXXX he would n't try to tell me how XXXX works and so I should not try to tell him how debt collection works. I told him that he was not listening and that I would have to go ahead and hang up the phone since he would not listen to any rational or reasonable explanation that I was providing.