Alchemist Infra Realty — not received maturity amount after maturity of certificate

Address:

100, 1st Floor, Okhla Industrial Estate Phase III, New Delhi - 110020

My father invested ₹5000/- on 05/12/2009 vide allotment no. Airl/rcc0157891 which have matured on 05/12/2018. But i have not received maturity amount till date. The amount was deposited towards the development of plots in shivpuri, mp. The estimated value after development would be not less than ₹15000/- as per the company's statement.
He is entitled to the amount which should be made to me at the earliest.