India Post — Non delivery of product consignment no aw[protected]in

Address: 794002

Website: Amazon.in

I ordered a product from Amazon.in. The order was given to india post for delivery with the consignment No AW[protected]IN and expected delivery date was 15th March 2017. But I have not received my product as it was returned back from NSH Guwahati and when tracked it shows the item was received at Kothur S.O. Please help to get my item as soon as possible.
Events Details for AW[protected]IN Current Status: Item Received at Kothur S.O
Date: 17/03/2017
Time: 09:51:50
Office: Kothur S.O
Event: Item Received