Fedex — Fedex Shipment Stuck with Delhi customs-Fedex not taking care

My shipment which should reach last weeky(JAN 25th) is still not reached and with Delhi customs. The initial status was Commercial Invoice missing but the shipper sent the commercial invoice which might have missed during the transport. I sent the copy of the commercial invoice on FEB 1th itself but the FedEx team has not sent the invoice to the Customs team till now which I am shocked. The customer care team is so rude and they don't even try to get the information from the FedEx customs team. FedEx customs team is not all following up with Delhi customs team. US FedEx is far better in terms of operations compared to India FedEx.
I request to follow-up with the customs team and release my shipment ASAP.