Because they're too busy with all of you. These guys are foreign (out of their jurisdiction; not their problem). Just don't use any buzzwords over the phone, because rectal microscopes don't exist yet (ouch).
Recorded call - exciting promotion! I was "selected" to win a six day, five night vacation in Orlando if i pay for a secen day car rental and participate in a "short" survey.
It's always another scam.
This number just rang my land-line phone 4 times then stopped. I work from home and only answer calls on this line from one number - my office. All others are ignored. I've never given my land-line number out to ANYONE. Everyone I know uses my cell phone number, so I know it's a scam call.