Myntra.com — got defective product during sell on myntra

Address:	Gautam Buddh Nagar, Uttar Pradesh, 201301
Website:	Myntra.com

Hi Team
i have made a purchased of my product from Myntra.com delivered on 10th oct and i got a defectrive and usable product.The shoes are in dirty condition and teared from one side.Regarding the same i have called 8-9times customer care they also create a exchange for the same and delivery man came to my address 6 times and refused to exchange the product because product was defective.
the same answer always i got from CSR and delivery man that CSR used to tell me the same thing that We have sent approval to the agent and your product will be exchanged and i am getting the same answer from last 3 weeks.
and delivery man used to say that we did not get any approval regarding your defective product so we can't accept it.
Really This is not expected from Myntra.
i have also attached the images of defective product and order number
Resolve the issue ASAP
Thanks!
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