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

Robo caller.  Answered, said nothing, other side hung up.  Given the messages already here, it is clear that this is a scammer.  FWIW, also a repeat calling scammer, as this is at least the second time they have called.  Pay special attention to the post by Jan above.

Received a call from this telephone number. No message was left. Anonymous callback reached  a telemarketing greeting saying that none of the reps were available.

They called us again this evening.

Unsolicited call.  Don't know who was calling.  Don't answer calls that don't identify themselves on the caller ID. Only the phone # was showing in the caller ID.