Ajio — i got fake product in box and ajio is neither refunding nor replacing the product

Address:	Gautam Buddh Nagar, Uttar Pradesh, 201308
Website:	Ajio

Sir/mam, i ordered a clarks formal men shoes from ajio. I got wrong size so i made exchange to that shoes.in exchange i got fake shoes which is not even copy of that shoes. I have made complaint many times to ajio. They are saying they can do nothing with this and giving excuse they got non ajio product in return. Order no. Is — ex01194026.
I am a student and 2800/-is a hige amount for me. I want fair investigation with this and resolution.