Received a robo call on my cell - "New loan program for your business".  Who are these people?

This call came in earlier when we were away, and triggered but left no VM.

Caller ID was simple "13136270119" and VM left was blank; Used *67 and called back - it immediately answered with a prerecorded " Thank you for calling back, If you want to be removed from our preferred offers, and placed on our do not call list press 1...." It hung up shortly after and went to an off the hook signal.

Tried again with the *67 to anonomize the call, and pressed 1. The response (funny, how do they put a private caller ID "number" on the list) was the rote " Thank you, you have been placed on our DNC list. Please allow up to 72 hours for the change to take effect..." It hung up shortly after and went to an off the hook signal.  

Since this was a first instance, I document here in case the Caller ID changes and tempts one  to answer by spoofing a Caller ID that one might trust enough to pick up. I've no doubt that it will call again within a week.  An obvious robocall and probably a telemarketer.

I AM A BUSINESS OWNER.THIS 314-627-0119 CALLS MY BUSINESS A LOT.WHEN I PHONE THIS NUMBER BACK FROM MY BUSINESS PHONE THEY  ARE CALLING ME ON I RECEIVE A RECORDING NUMBER NOT IN SERVICE AND WHEN I CALL FROM MY PERSONAL CELL NUMBER GOES THROUGH AND STATES IF I WANT TO BE REMOVED FROM THEIR CALLING LIST PRESS #9.I CAN NOT DO THAT FROM MY PERSONAL CELL BECAUSE THEY ARE CALLING MY BUSINESS PHONE NUMBER. CALLER I.D. SHOWS THIS NUMBER AND IT IS COMING IN FROM ST. LOUIS MISSOURI.

I AM A BUSINESS OWNER.THIS 314-627-0119 CALLS MY BUSINESS A LOT.WHEN I PHONE THIS NUMBER BACK FROM MY BUSINESS PHONE THEY  ARE CALLING ME ON I RECEIVE A RECORDING NUMBER NOT IN SERVICE AND WHEN I CALL FROM MY PERSONAL CELL NUMBER GOES THROUGH AND STATES IF I WANT TO BE REMOVED FROM THEIR CALLING LIST PRESS #9.I CAN NOT DO THAT FROM MY PERSONAL CELL BECAUSE THEY ARE CALLING MY BUSINESS PHONE NUMBER. CALLER I.D. SHOWS THIS NUMBER AND IT IS COMING IN FROM ST. LOUIS MISSOURI.