Myntra.com — Return refund and reshipment

I had orderd a cardigan of Mango from Myntra. The seller was Truenet Commerce. Order ID#1192331. I received the used item and it was dirty so I returned it and I received the mail that the return got rejectedand will be reshipped back to me. After that I tried conatcting Myntra customer care and it was of no use. I even shared a query on Myntra app but I got no response for the same. I have not received any refund and the item was also not reshipped back to me. The cardigan was worth Rs. 2913 .I can say that Myntra looted me and this is not done at all .How can you treat you customers like this. Its been approximately a month and I have not received any mail or feedback regarding this. Plz help me out.