If you call that number they ID themselves as
Johnston Parker and Associates.
Most likely this group:
Johnston Parker & Associates, Garland, TX
Phone: (972) 203-1168
Email:
[email protected]
Web: www.jpainfo.com
BBB gives them an address of:
JPA / Johnston, Parker & Associates Inc.
PO Box 497377
Garland, TX 75049
Skip tracers so far as I can tell.