National Commercial Services has been harassing me with phone calls and letters claiming they represent XXXX XXXX XXXX XXXX XXXX, and that I have an outstanding balance of {$2000.00} as of XXXX XXXX, 2015. They claim this money is due to an auto accident that happened on XXXX/XXXX/15. I have explained to them that they should contact the insurance company because it was a company vehicle. They insist that they have the right to continue with their tactics, and hang up the phone when I say they are harassing me.