I have received numerous calls from this number. They call several times a day. Really very annoying. Tried calling the number back and it just rings busy. I don't bother answering anymore and just let it ring.

I pick up the phone - no one there ...

yes am reporting this to the phone company.

Call your phone company and ask if they can block the number.

Called several times last night around 8:00 - 9:00pm..probably hydro "survey" I didn't answer...screw-em!

Kantar Operations North American Headquarters535 East Diehl RoadNaperville, Illinois 60563-1355United StatesPhone: 630-505-0066Fax: 630-505-0077 C.E.O. Sharon PotterCheck this page for the VP's contact/home phone numbers: http://whocallsme.com/Phone-Number.aspx/6305053008/29

They called again on Oct 18th around 7:00pm...that's it...off to the CRTC go their names....I went through their prompts and had my number supposedly removed...it didn't happen...complaint is going to be filed. (AGAIN)

Now the number is apparently out of service...and their website: www.kantar.com is not functioning...because it looks like they've changed their registration to a new domain:

  Domain Name: KANTAR.COM
  Registrar: ASCIO TECHNOLOGIES, INC.
  Whois Server: whois.ascio.com
  Referral URL: http://www.ascio.com
  Name Server: APDNS1.GRPITSRV.COM
  Name Server: NADNS1.GRPITSRV.COM
  Name Server: UKDNS1.GRPITSRV.COM
  Status: ok

ascio.com is headquartered in denmark and germany...so they have moved to places where extradition is difficult...I'm going to guess this is a big scam outfit...if you get a call from them...report it to your local law enforcement cybercrime division...and the CRTC...
  Updated Date: 04-apr-2011
  Creation Date: 20-mar-1998
  Expiration Date: 19-mar-2012

>>> Last update of whois database: Wed, 19 Oct 2011 17:33:23 UTC <<<

STOP CALLING!!!
I get multiple calls a day. Never call me again.