Fedex India — Shipment stuck at custom for a over 21 days

Address:

FEDEX INDIA

I have sent a parcel from the USA to India, Some clothes for alterations, that package stuck in Custom. I have submitted all the required documents and asked them that this is not for commercial use so please release my packet.
I am sending emails to them every single day but no response from them.
There is no FedEx customer care phone number available from the USA to India to talk to them, so my brother starts calling them and getting the same answer THAT THEY WILL RELEASE MY PACKAGE but I am still waiting for the last 21 days, last 5 days they just keep ignoring my email, I don't understand what to do now.