Myntra.com — return policy of h&m coat

I have ordered h&m coat black in color the exact price was 5499 but after discount i had paid 4400 in which i also deducted my myntra credit points that was rs1000 in total i paid 3400 as of now i hv received my order but the coat is oversized so i want to return the order but i'm not able to return the product (Item cannot be returned due to the nature of the product) i'm getting this kind of response neither there is exchange policy nor return please help me