Calls all the time, never leaves messages and no one is there when I pick up. WTF?!?!

Just posted household items on Craigslist yesterday and last night got call from this number... they must just randomly search these venues for leads? I dont answer unknown numbers and only return calls to people who leave messages. This call isn't a problem, just an irritant.

just got this call and called back as well and out of service whats the deal>??? i was watching a horror movie lol talk about scary quintessence lol

Voicemail message from woman says she is with NES(? - could not really understand the company name).  She needed for me to call her office today, left a callback number I did not write down.  I have also gotten several calls from 305-356-9999, did not know there might be a connection.

Person just called and it's annoying as f! (from BC, Canada)

I got a call from this number numerous times over the last few days.  I have yet to answer it, but if they do call back...I will, simply to see what story they tell me.  This is rediculous..I mean, all of the crap they have these days that are supposed to prevent this stuff....and STILL people find a way around it.