Alchemist Holdings Ltd — Non receipt of matured amount

Sir/Madam,
I purchased redeemable preference shares of ALCHEMIST HOLDINGS LTD.i am not getting the matured amount.The details of the shares are given below.
Cert.no. Regd.folio No . D/purchase R/date R/value
1) 238026 H[protected]/08/2008 21/[protected]
2) 375161 H[protected]/10/2008 21/10/[protected]
3) 021153 H[protected]/06/2008 09/04/[protected]
With best regards, Probesh Chandra Dhar
Hailakandi, Assam