I answered a call from this number; it is a recorded pitch for alarm systems, but the company name is not given.  I neglected to press 1 to speak to a representative.

I got a call from this number but didn't pick up in time.  They didn't leave a voicemail.  However, I called back and it was an automated message system for house alarm systems.  An advertisement basically

Called and left no message.

Received a call on my cell, no message left.  Does anybody know who or what entity is making these calls?