Called both my land line (caller ID: Los Angeles, CA) and cell phone within a few mins of each other. Did not leave messages with either. Suspected Scam based on the comments and my experience. Looks like this number has only been active for a day at this point.

Called at 8:00 at night didn't leave a message, most likely spam

Complaint filed with FTC:
https://complaints.donotcall.gov/complaint/complaintcheck.aspx

Called Sunday 10 am, with a melody (Vivaldi!), not just a ring!!!  No way did I answer such an intrusion and they did not leave a message or ID.  Bothersome, even if classic music choice!

Called my cell and left no msg. I called back from my landline and the recorded msg said the service that you were called about is now over, if you want to be removed from our calling list press 9. I did and I blocked them on my cell.