Received a call from 704-489-3314 on 12/16/2014 at 10:34 AM, CNAM read as " Unavailable."  Dialed the number (anonymously) and heard the following message:

“Thank you for calling the DTA Group, if you have received any legal documents please refer to your local magistrate’s office. If you know your party’s extension please dial it at this time. For the Processing Department press one. For the Investigation Department press two. All other callers press zero.”  (pause) Live person answers: “DTA Group how may I help you?”

Since we have no debts I cannot tell if the intent of their contact was mischievous or they simply dialed the wrong number.

Another one of those infamous "Mr. Thomas" calls. Fake collection agency

Found a few details about these folks:

The DTA Group, LLC
800 Briar Creek Rd Suite Bb406
Charlotte, NC 28210
(866) 513-9329
http://thedtagroup.com/

The Registered Agent on file for this company is:

The Patterson Law Office, PLLC
6135 Park South Dr Ste 510
Charlotte, NC 28210
(704) 749-3106
http://www.thepattersonlawoffice.com/