called my cell phone, too... no message. I suspect political polling.

Called numerous times, no message left.  Says Nevada Call on caller ID.  Blocked

Your company called and hung up...take me off your list.

Ooops, you mistook 800 notes for your caller. 800 notes is a user driven forum for discussing phone calls from unknown or suspicious callers.  No one at 800 notes called you nor is it likely that the caller will come to this web site, read your post, know who you are, know your number and stop calling you.  Think about getting a call blocker or downloading a call blocking app for your cell.  You can control who has access to you via phone.  Here's the 800 notes forums on call blockers.  Take a look at it.  There's lots of good advice on the different types and brands. Cheers!  :-)
http://800notes.com/nb/search.aspx?q=call+blockers

As for the caller:  Call back gets, "We're sorry you have reached a number that has been disconnected or is no longer in service."  So the number is spoofed (faked) which usually means SCAM.  Block it and forget it.