They are hustleing for law inforcement ,  phone scam.

Received a call from this number on my cell phone 10 minutes ago, didn't pick up, got the following lovely voice mail, consisting of two pre-recorded sound bites with a rich Texan accent:

0:00-0:02 "This is Keith Doherty, how are you doing today?"
0:04-0:05 "Are.. are you there?"

Followed by 2:55 seconds of complete silence, until my voicemail system presumably hung up on them.

From a quick search, this is a new number for an old scammer.
See http://800notes.com/Phone.aspx/1-972-597-2774 for more of the same.

Got a text message saying: "Can I call you later?"

I didn't respond.

Didn't answer didn't leave a voicemail

More crooks trying to steal money from us old folks. Go get them and put them in jail.

These callers violate my right to privacy, harass and terrorize myself and others, illegally spoof their caller IDs and illegally call cellular phone numbers.

Filed the above complaint with the National Do Not Call Registry. Suggest others do likewise. They have the authority to take action and need the complaints filed in order to do so. Complaining here at 800notes.com will not result in any action being taken.
https://complaints.donotcall.gov/complaint/complaintcheck.aspx