Naptol — Gift prize money

I got scratch coupon saying that got a money of 12, 50, 000 Rs, so u want to pay 0.5% of the amount then i pay it, after that once again he told me to pay to 0.5% so paid it after that he asked me to pay 14100 rs so i paid it, now he is asking to pay 32000 rs, iam asking to return my money but he didn't respond to me, please let me know how to get it back