Tata Docomo — GOT A FAKE CALL

Address:

Varanasi, Uttar Pradesh

I got a missed call from the number [protected] on 5th Oct. 2012, 7.29 am. When I called him back in the evening, 6.59 pm, he said that he was calling me from KAUN BANEGA CROREPATI department, DELHI and I have won Rs. 25,000/- and to get this money I should call a number. When he was telling me the number the number, I found that it was starting from 0092, suddenly I felt that perhaps I was making an ISD call, and I disconnected the call. I don't know how did he get my number and why was he telling a lie. I have already activated the DND service on my number.
I am a TATA DOCOMO user and I think the customer care will say that they are not responsible for this call.
I don't know what should I do. Should I go to the police ?
Please pay some attention to my problem.
With due regards.
Thanks.