This is actually a headhunter that I think got my info from linkden. I did receive an interview by phone and the company was legit.  So if you joined linkden? That is why you received a call from them.

This phone number keeps calling my cell several times a day and then hangs up.  It's been going on for weeks.  Make it STOP!

This was not a headhunter.  They were trying to get me change electric providers.  Extremely rude woman.  When I asked her to stop calling and remove my telephone number, she retorted with an ethnic slur.

called with many voices in the background and caller was a male voice. Was whispering "please help me please help me." called twice!

very rude Pakistani, background sounded like a boiler room