Top 100 - scam / don't give info

Sounds like a vanity scam. The caller did not give his name, wanted to start by asking 'basic info' questions. I only gave my job title before cutting him off. Don't pick up.

Caller said he was from Top 100 Elite Magazine.  He refused to leave a call back number, but called incessantly and became rude when he was told that the attorney was not available.   It's a scam!  

The guy that called asked for Lee Jackson and I said I think you have the wrong number.  He says "What the F*** does that mean?"  I said I think you're calling the wrong number, what company are you trying to reach... this is a company?
He hung up!  He seriously scared me!

Started receiving calls about 3 weeks ago. Instead of hanging up, they wait until the voice mail is ready to record after the beep and then do not say anything on the message and hang up immediately, ie in approximately 2 seconds. I did a reverse lookup on the number and it identified the number as one of a Global Network. When I googled the number, there were so many hits like this website where people were advising it was a scam, harassment and if the caller did in fact speak to them they used extreme profanity. What do they get out of that? Thank you.