NRS Services representing PM Services The letter sent to me had no last names or signatures but I was to send them $189.99 ASAP Davidson, North Carolina

A letter was sent to me from NRS Services stating that I owed $189.99 for a cancellation fee for a co, named P.M. Services. The letter was very suspecious sine the names of the collections managers were Bethany or Lewis. No last name & no signatures. Called their # 704-464-6398 & recieved an answering machine. No one returned my call. Received another letter same as the first. Called them again & this time they did return my call. Did not reveal who they were & asked if I received so called letter. The person was very rude & also hung up on me. I have reported them to the Wi. Attorny General & the Post Office.