Kolkata Customs — Gift of Phone and watch by my partner

My name is Yash Sadhukhan
Phone: [protected]
Address: 216/2 R. B. C. Road, Naihati
District: North 24 Parganas
Pincode: 743165
State: West Bengal

My partner sent me a gift package through EMS, on 20/07/2021 from Finland

Consignment Number : EE[protected]FI

From 02/02/2021 to 17/08/2021, the Track Consignment is showing that my parcel is on CUSTOM HOLD at KOLKATA EMS SPEED POST CENTRE with remarks of RETAINED BY BORDER AGENCY/SECURITY FOR U

May I know the reason of my parcel on Custom Hold for 15 days, or what shall I do next to get my parcel delivered to the given address of mine ?