Kuber Mutual Benefits Limited — Non redemption of share certificate

My mother had invested in one share of Kuber Mutual Benefits Ltd in March 1992.Till date she has not heard from them and wants to redeem the share.Kindly take note of the fact that she is 85 years old and wants to have the same redeemed. Pls advise the course to be followed for the same at email address [protected]@gmail.com.