Infrastructure Development Finance Company [IDFC] — Idfc tax saving bonds

I would like to know where to submit complaints(A responsible person/authority) regarding non redemption of bonds.
What is the use in posting complaints on web site.
On the back side of the certificate it is printed -bond holders may be requested to surrender the consolidated bond certificate not more than three months and not less than one month prior to the maturity date so as to facilitate timely payment.Maturity date for idfc long term infrastructure bonds tranche -2 in my case is 22/02/2016. Today 11/03/2016 at 5.36 pm one person from carvey called and informed me 14/03/2016 is the last date for redemption and original certificate shall reach hyderabad before 14 th noon (From kochi)