Fake product selling by Paytm vendor

I bought 128gb memory card having order no. 396493270 from online vendor Paytm on 13 oct 2017. It cost me 1074 Rs. Although they have mentioned that product is of 128gb, it is not. Usable memory is only 8gb It
is fake product deliver by Paytm. I already complained it regarding it previously and Paytm replied that I didn’t contact them within return period of time. But on website it is mentioned that this product is non- returnable. So how can how can any consumer return it after finding that it is a fake one.
So I request Paytm to replace this product and banned that seller which deliver fake product. So that buyers like me not face much problem.

Rishiksh kumar Sharma
mayur vihar-1, New Delhi 110091
Email: dxxxxxy@gmail.com