Left a message, talking about something very important, something about a mediation case. First thing that came to mind was, I have no clue what's it about. I researched the # online and looked up Hanes & Associate and I'm glad I found that I'm not the only one. Sounded suspicious. Good thing I never called back.
Read up on your rights here, get template letters to send and also make a complaint at this government site: http://www.consumerfinance.gov/
Also file a complaint with your State Attorney General's office.
List of State AG’s offices: http://consumerfraudreporting.org/stateattorneygenerallist.php