866-862-2793 also at 210-366-4397, 210-525-1355 and 210-348-2718 - the "urgent" call involved "a possible legal matter."  My phone caller ID listed the originating number as 000-000-0000. "OPERATIONS DIVISION" AKA  GC Services is a collection company:

This is the information that research has on this company:
5430 Fredericksburg Rd
San Antonio, TX , 78229-3539  
Phone: 210-344-0881
FAX: 210-344-8905
www.gcserv.com
Also:
6330 Gulfton
Houston, TX  77081
713-777-4441

Has anybody seen the south park wheel of fortune "NAGGER" episode???  Allison Moran is a low life debt collection solicitor from San Antonio, Texas.  If they continue trying your number, and you have a "no solicitations" message on your answer service, they are breaking the law and you can report them to your phone company and your stats Attorney Generals office.