Nixcil Pharmaceuticals Specialities Ltd — not given maturity amount

Respected sir,
With due respect i would like to inform you that i invested rs.35000 (Thirty five thousand) in nixcil pharmaceuticals specialities ltd. Under kolkata zone, in july 2007. Bearing reference share certificate no.00102343. Distinctive no. (S[protected] to[protected] folio no. Cc0088035 containing 35 preference shares face value 1000 each. My certificate was matured on 12/09/2013. But till now i didn't receive any redemption amount. Please tell me the way. My email address is [protected]@gmail.com.