I received a phone call but no message who is this?

I have received calls from this party numerous times.  Whoever it is never responds to hello.
I won't pick it up anymore.

Auburn Office

909 "D" St. S.E.
Auburn, WA 98002

Tel: 253-939-6030
800-235-9893

Fax: 253-939-6489

Email:
information@nwprimeline.com

http://www.nwprimeline.com/contact.html

This number calls me cell phone repeatively.  Only lets the phone ring 3 times so the answering machine doesn't come on.  The first and only time I've answered this phone call, the guy on the other end was extremely rude, demanding to speak to someone else (Hello?!?! this is my phone number)! For some reason, they keep calling.  And of course, when I try to call back, they hang up.  What *ssholes!  They need to quit calling.  I'm not wasting my cell phone minutes on these calls.

Calls and hangs up. When I call back, there is no answer.