<prompt> Human: A place called ARS national services that claim they owe 4,000 are threatening my parents with destroying their credit and harassing them constantly. They claim to be affiliated with Citibank and while my uncle did have a Citibank account that my dad was involved with Citibank says they are NOT affiliated with ARS. I thought maybe I could tell ARS if they dont stop Im going to contact the NYC attorney general fraud dept. What are your thoughts on how to go about stoping ARS?Thanks everyone.  <response>: Dealing with collections Request all communications by mail Request debt verification 