Paytm — Lost money in my paytm wallet

Address:	Mumbai City, Maharashtra, 400005
Website:	paytm.com

I just recharge my mobile with a paytm coupon with rs 50 and got 50 rs cashback.. but after 3 days i check my acount there were no money in it.. what should i do?? as i said before i recharge my number from paytm and i got 50 rs cashback... but after 3 days there were no money in paytm wallet.. i dont even use that money.. how can it be lost from there ... i recharge it from a paytm promo code "june50".. i want my money back... paytm is a lier