Small Industries Development Bank Of India — where to send to redeem this bonds

Address:	Nariman Bhavan,227, Vinay K.Shah Marg,Nariman Point,Mumbai-400021, 560084
Website:	SMALL INDUSTRIES DEVELOPMENT BANK OF INDIA

I purchased a deep discount bond - series 1 bearing certificate no.00296040 and 00296041 folio no.[protected] dt.[protected] transfer no.0000655 on dt[protected] which matures on february 2013 (20 years full term completion) and i have to receive matured amount of rs. 1, 00, 000/-. Each bond with interest. But we went to karvy registrars and given for redemption in the month of about june 2018 and the same was returned from karvy on 17/8/2018 mentioned that we are not registrars. Now we request you kindly suggest us where to go to redeem the same bonds.
From: r. Sunita, mail address: [protected]@gmail.com m no.[protected] / [protected]