Did not get a call but a couple of SMS to our cells. You won blah, blah, and asks you to visit a website and enter a number (any nuber will do it). The website is: PRIZETXT.CC A whois lookup brings up the following info about the owner:
Domain Name: PRIZETXT.CC
Domain ID: 100581535
Whois Server: whois.enom.com
Referral URL: http://www.enom.com
Updated Date: 2012-08-24T01:36:01Z
Creation Date: 2012-08-24T01:36:00Z

Domain name: prizetxt.cc

Registrant Contact:

Samir Kocchar ()

Fax:
F32 Ramdev Nagar
Kamatipura
Baroda, gujarat 390009
IN

Administrative Contact:

Samir Kocchar (jyotx@hotmail.com)
+91.9099288233
Fax: +1.5555555555
F32 Ramdev Nagar
Kamatipura
Baroda, gujarat 390009
IN

Most likely all contact info is fake.