Sleuth here: I believe this is a re-dialer service which
dials your number until it is answered but the party that
is using the service is not there when you answer the call
and there automatic message is not properly activated.
I have NO idea who the heck this is, they have called me several times, usually within minutes of each call, there is never any one there and of course, it's busy when I try to call the number back...VERY ANNOYING!!!