Golden Forests India Ltd — Invalid Cheque

Hello,

My name is Rohit Tomar.

My grandfather invested in Golden Forest in 1996 under my name.

Maturity is due this year (2021) but Bank is not accepting cheque saying its too old and said to ask company to re-issue a new cheque.
Canara Bank cheque.

I tried to reach company via phone/email provided but getting nothing back.

How can reach company and ask them to re-issue a new cheque.