TOUBRO HOLDING LIMITED/ SHARES — Process to know how to redeem my maturity value

This is to inform you that 5000 nos of shares in name of Arpita Ghosh has been purchased from Toubro Holdings Limited, Regd office -S. C. O. 12-13, Sector -9D, Chandigarh.Regional office -15, Ganesh Chandra Avenue. Kol 700013
As per the allotment letters (2nos.) the shares are of rs. 10/- each, certificate nos. 026694, 026695 and distinctive nos are 16510301 to 16512800 and 16512801 to 16515300 respectively. Shares matured on 30.12.2021.
I want the redeemed amount of the shares, but no idea about the process. Regional office does not exist at the above address. Plz help...