Reliance Polypropylene Ltd — status of 16 p.c.ofcd issued on may 20,1993

I am holding the folio no. 71242161 certificate no.00248504 distinctive no.[protected] to[protected], 100 debenture issued long 20/5/1993, i want to know the status of the certificate. I didn't get any communication /share certificate. The certificate is in the names of shubha srivastava and kaushal kishore srivastava. Please let us know the status as on today o n e mail kaushalkishor. [protected]@yahoo.com.