Who called from 8185558787

I answered the phone but there was apparently nobody on the line, and no recorded message,

I received multiple calls from this number at the same time. So while I am saying "Hello? Hello?" to no response, another call comes in from the same number. There is no sound on the other end of the line.

Oooh..  I got a VM from Mr. Brooks saying he is at the award department regarding the automatic entry submitted last year re: 25K cash give away  Call 1800 690 9776 right away.  Congratulations.  We need to hear from you right away.  REALLY.  If you believe him you can call him.

i got the exact same message

Same thing just 5 minutes ago