Rediff.com / Samsung Galaxy S3 Flip Cover — I want a Refund and not replying my any call and emails

Address:

Jammu, Jammu and Kashmir

hi i am lovish bharat from jammu. i ordered a product at rediff.com. it was a galaxy s3 flip cover. its order number was 7252521. i received my product but it was broken. i sent that item back to its seller to gadget bucket shopping in mumbai and then a call received to me that my complained product has been received to the seller and now they said that ur money will be refunded through rediff.com. i started contacting to refiff.com but they didnot and are not responding to any of my emails and calls till now. i placed order there last month ago. now i want my money back that is Rs. 800 now. rediff.com said they want to see the shipment slip which i have returned them back but i gave them the airway bill number as i had misplaced and lost that shipment slip. so please help me. anyone ? please.