Fedex — Package stuck at Banglore customs

Hi, I shipped a package from usa to Hyderabad, it was supposed to be delivered on 5th feb2021 . It’s still not delivered. I called FedEx multiple times in usa, all I get a standard reply saying it’s awaiting clearance, no one lets me know when it would get cleared. Online status says missing commercial invoice. I had submitted the invoice at [protected]@fedex.COM and despite of that the status still says pending . Airway bill[protected]