Paytm — Product unable to refund

Address: 831003

Website: www.paytm.com

I had order one jeans from paytm delivery has been done after 7 days, when i got product product is defective and i want to change or replace or return but i am unable to contact with paytm properly, i can say that for shopping from paytm is not user friendly, shopping any thing from paytm that is you are playing lucky game.
After that no one is able to handle in proper way with your concern problem.
Whatever i have got product that is useless for me, i can't able to thing what i can do for that.