[Resolved]  Snapdeal.com — about lucky draw

Sir i have receive a call and msg for a number on behalf of snapdeal. For winner of tata safari. He called me for paying registration fee and service tax. What i have to do. They send me lucky draw winning ticket. I m confused about lucky draw. Tell me what to do. He asked me for paying registration fee rs 6500 and service tax 1% rs 12600. Plz suggest me what to do