Alchemist Infra Realty — insurance

Sir,
I am manidra sarkar, w/o of suma sarkar from kolkata. I invested some money in 31st march, 2009. Allotment no-airl/ara0006288.. Now this was matured in 07/08/2017. I created it by a agent. But now i don't know where is he.. Pls give me any suggestion where we go for this money. We don't know your office address also... Pls kindly help us. Pls inform me. Thank you