India Post — parcel block in custom- retention for unspecified reason

Address:

Mumbai City, Maharashtra, 400078

Hi Team,
My parcel is stuck with Custom from 8th feb 18.
Please help to release the parcel ASAP, it local tracking number is EA[protected]NL. This is sent from TRAKPAK international

TRAKPAK Tracking Number: TAM9880GB[protected]
Shippers Ref: [protected]
Tracking Number: 3STJPK9844873
Weight: 0.844 kg
Local Tracking Number: EA[protected]NL
Total Pieces: 1

On India Post site, for this Tracking number EA[protected]NL it says "Retention for unspecified reason".

Please help to release the parcel as early as possible