Coming calls and threathens to take to court for bills that were already settled or paid.

II have demande4d (10 have received numerous calls from this number, proporting to be from the "Attorney General's Office". I have demanded (1) a written notice of the nature of this supposed claim?! be sent to me via U.S. Post & (2) cease & desist calling me on my cell phone.  The caller is not of US & clearly speakes with a marked asian accent.