Fedex — FedEx AWB No:[protected]

My shipment with supplements from USA reached Bangalore on December 6th bearing AWB[protected]. I submitted all the documents and several extra documents as well when they asked and everything was submitted on time. But they still didn't dispatch the item and its almost 27 days. They are not answering calls nor replying to emails. They just put up some random hectic custom duty above that. What am i supposed to do? Whom should i reach out to? This is just Frustrating and pathetic service !