The caller XXXX from National Credit Solutions called my place of employment. I asked to remove the number and not to call my workplace and they threaten to call back again and then requested to speak to my supervisor. The gentleman was very nasty, rude and disrespectful when speaking to me over the phone. I simply asked not to call my work place and he continued to say that he was calling back again and threaten to speak to my supervisor. The number I was called from was XXXX