Plethico Pharmaceuticals — non receipt of maturity amount on FDs

I have three fixed deposit accounts in Plethico Pharmaceuticals FD No. 4847 and 13211 and 21546, each amounted to Rs. 100000/- The earlier two have matured in 2014 and the last one in 2015. Till date I have not received back my FD maturity amount neither have i been receiving any interest on these from last 15 months . The interest amount is now crossing 50000. I don't understand how long the company will keep all the genuine investors waiting for their hard earned money. Rgds Radhika