Myntra.com — Exchange Product Delivery Related

Dear Myntra, I order a Jacket of Perfkt U from your site Order ID # 1193285 [protected] . First of all I got delivery very late and when I try to check size, I found it is small in size, so I create exchange request not cancel, after request Myntra is not delivering exchange product to me from 20-25 days . I every time give complaint to myntra executive, they said we will resolve it and no body is taking any pain or confirmation from me, that I received my exchanged product or not. And now when I want to cancel it, they are confusing me that you could not cancel untill the delivery boy not come to your home for delivering your exchange product, You have to denied him and place another request of cancellation. Is this my fault, I faith on Myntra . Please resolve the issue, I will never shop from Myntra again in future.