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
Received a call from this number (302-223-3030)... sounded like a recording, that stated I was named in an ongoing investigation and this call serves as my "official" notice... The problem: they called a place of business, did not ask for anyone in particular nor did the lady identify herself.
Bunch of dumb a$$$$$$$$$....