Dg Shipping — Bsid re-dispatch request

Address:

Mercantile Merchant Department, Chennai

My name is Murali Subrahmanyam, my CDC number is MUM 432837, my Indos number is 18HL6282, my BSID number is C33308298.
I didn't receive my BSID card from my post office.
When i checked with my post office which is in Hyderabad, Telangana state and they have mentioned they returned it back to sender as post applying I had to leave and join the vessel.
Please could you help me in retrieving my BSID card on how to get it and when should I go and pick up.
Do i need to visit the center's either in Chennai or Vizag as I have applied there and submitted my documents.
I have sent several emails in regards to this on what is the process for me to get my card but there is no response about, I have tried even calling the number for the department in Chennai but no response on that either.
Please do assist with the concern on what should I do in order for me to get my card, do I need to send special email to certain address or do I need to visit and collect it from my end directly.

Thank you.