Myntra.com — not refunding my money for return

Address:

619, SECTOR 91, Mohali, Punjab, 140307

I had ordered a us polo jacket of xl size which was too big for me. I returned the order right away very carefully, delivery guy also checked it's quality and tags very carefully. I ordered a size smaller very next day thinking i'll get my refund for earlier order. But it got declined. Without any specific reason. As i remember very clearly that every tag on its place