They're back!!!!!  This telephone number, allegedly from Texas, has been operating on and off for ages.  

Furthermore, I believe, it's currently now operating in conjunction with the telephone number 1-191-739-8300, which has only recently appeared and become the subject of complaints.  (Note:  191 would be an Area Code for a few areas within the UK.  As such, the number making rounds throughout this country is also a spoofed telephone number.)

These people are scam artists and/or telemarketers, and they're hoping you'll call them back and, ultimately, provide your personal, sensitive information.  Please don't respond...ever.