So, I picked up the phone, and said hello, twice. and heard a beep, then a voice said "good bye"  WTH

Predictive dialer with more live answers to calls than agents available to handle them.

Have received calls from this number, never answered.  Caller Id simply shows "Illinois Caller".  However, a Google search finds the number is for the obviously erroneously named "Best Social Advertising".  Their web site is blocked for me at work, so can't check it out to see what they purport to do.  If they were legit (or if the call was from them) the caller ID should show the name, one would think.

would not answer my ? if this was legit electric, kept repeating I want to talk to person in charge of electric bill; and eventually hung up when I kept asking if this was about a bill

picked up the phone nothing. what's up?