krishna bhagya jala nigam limited — Regarding bond certificate

Address:

Kumarapatnam

We are holding Krishna Bhagya Jala Nigama Limited Non-Convertible Bond Certificate for Series-II Secured Redeemable Deep Discount Bonds of Rs.28, 000/-.
We want to get the same redeemed.
The above Bond was issued on 1st day of August 1997. We want to know the procedure for getting the same redeemed.
We are not getting any response for our phone calls.
Request you to help us in knowing the correct procedure.
We are resident of Kumarapatnam, Ranebennur Taluk, Haveri District. Karnataka.
Your kind help is highly solicited.