Help! Need to get my package ASAP - KOLKATA AIR FOREIGN RLO BUILDING, Custom Hold

Hi,
This is the tracking number of my package - RB845244000SG
Ordered a china make ipad pencil - usb chargable (No batteries). It's status is :
2019-11-11 16:29
KOLKATA AIR FOREIGN RLO BUILDING, Custom Hold

2019-11-11 16:29
India, KOLKATA FOREIGN LCAO, Record item customs information (Inb), Retention reason : Awaiting presentation to customs commissioner

2019-11-09 18:03
India, KOLKATA FOREIGN LCAO, Transfer from office of exchange (Inb)

2019-11-09 15:47
KOLKATA AIR FOREIGN RLO BUILDING, Item Received

2019-11-09 15:47
India, KOLKATA FOREIGN LCAO, Receive item at office of exchange (Inb)

Can someone please help as in when should I expect the package, Also tried calling the number in the kolkatacustoms site, no one picked up. How do I contact them

Thanks,
Kumar