Synergy Management Services — Non receipt of payment of debentures

Synergy Financial Exchange Ltd — Non receipt of invested amount
My late mother Smt SARASWATI SITARAM PARAB had purchased '15% secured redeemable non-convertible debentures' amounting to Rs.10, 000 in December 1996 which were redeemable at the end of 3 years i.e. by end Decemebr 1999. However, we have neither received any interest nor the principal amount. Can you help me to get at least the principal amount ??
I am a Mumbai resident. My contact details [protected]@gmail.com
The details of NCDs are -

Reg folio no Certificate no Distinctive nos No. of NCDs of Rs.100 each

S[protected] to 863014 50
S[protected] to 863064 50