[Resolved]  UTI — Lost UTI Bond Certficates

This is really not a compliant but a request for help. I seem to have either lost or never received the UTI Bonds after conversion from US64 units. Being an NRI, I could not keep track of the various correspondences which were originated when those units were required to be converted. Now my bonds have matured and the UTI has asked me to submit the bond certificates in original. I don't have them. What should I do now? How am I to proceed further on this mater? Could someone please mail your advise directly to my email id? Thanks in advance