[Resolved]  Snapdeal.com — I received a coupon in which it is written that I won 10 lakh rupees

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Malik Ranjan Avenue Basant akal Saha Road New Alipore, Kolkata, West Bengal, 700053

I received a coupon in which it is written that on the occasion of snapdeal anniversary celebration the company has selected few of its customers in a random lucky draw contest..It's our ultimate pleasure to announce your winning price 100000 rupees winner certificate along with an additional scratch card coupon which you will be able to redeem by either calling on our prize helpline number stamped on the coupon or you can also call or sms the code underneath to our prize helpline.. So when I msg the helpline number so it asked me my account number and ifsc so I had provided them so I really need ur help what shall I do now please tell me