Indiaplaza. In — want to return my product and want to get refund

Dear officer,
I Nitin jain s/o Mr.lalit jain residing at 19,seetabag colony ordered a yellow color us polo t-shirt on indiaplaza.in and duely recived the product.Bill details-
Invoice no:SNS13000432
Invoice date:25/03/2013
Order no.I[protected]

And when i recived the product i just planned to return it because the quality of the product was worst and even i think its duplicate.soon i being in the seven days limit prescribed by the site generated the ticket to return the product (CNT[protected]) on wHat i was to get a revert by their executive by 30 march.But recived any revert from their side.Now i'm with the t-shirt with my money locked with them.kindly help me for the concern.
Thank you
E-Mail id-l.[protected]@gmail.com
Mob no.[protected]