Called my cell phone and hung up when I answered.

Actually, Pauline helped he land a nice international position this week. I recommend her

There is an heintl.com in internet.  I got a call about a position from this Pauline Tan.  They had my CV somehow.  Seemed to know what they were talking about but I was not interested.  They have call me from this number on 3 occasions.  Hmmmm

Claimed in an emai they were recruiters:
Pauline Tan, MBA
Human Engineering International
Streamwood, IL 60107 USA
(O) 630-497-1888
(C) 630-433-0398
www.heintl.com
However, there is no heintl,com nor HEI on the internet, and Streamwood is 847 area code

Rang and hung up