A person who identified themselves as XXXX XXXX called me around XXXX and asked for XXXX XXXX XXXX I told him that he can not be reached at my cell phone number I was speaking on, but he became irate and stated the following : " This is the phone number that he gave. I am not telling you who I work for unless you tell me how you represent XXXX XXXX! You must know how to get in contact with him! '' XXXX XXXX 's tone was harsh and unnecessary. Later I researched XXXX XXXX 's phone number and found he was calling from a firm called the National Credit Adjusters.