Bma Wealth Creators — Requesting for claims for Client Id: [protected]

Dear Concerned person,
Myself Biresh Chandra Sarkar had a Demat account with BMA Wealth Creator with Client Id: [protected].
I got a email on 19th march form BSE that BMA Wealth Creator has been declared as a defaulter and I needed to claim it by May, 2020.
I am a senior citizen and during that time (FEB-OCT, 2020) I was in USA for my personal reasons, and due to the present pandemic situation I was not able to respond timely.
Kindly let me know How can I claim my shares or underlined valued money now.

Best Regards
Biresh Chandra Sarkar
email- sarkar.[protected]@gmail.com