Paytm — Fake discount coupon

I received a order from paytm which is rs 250.00 coupon for lenskart.

I try to use it but i can not use it because not valid.

I made simple complain and got three messages from support team stated that they will resolve the problem.
Each day they extended the day for resolution.

Now four days has gone no answer and i already going to buy glasses from lenskart but can not use that coupon.

Fake marketing to attract consumers and than no service after cheat them.