Citibank Credit Card — Asking to make payment for not used credit card.

I have mentioned this to CitiBank Credit Card department many times but there no positive reply recieved from them yet:

Details of the complaint we have made are as follows:-

Card LOST was reported on 04-Aug-2008 in the morning. (But was lost on 03-Aug-2008 evening but we couldnot report as we were not having the helpline number and credit card number with us at that moment due to it was sunday our office were closed where we keep all the statements.)

I have recieved Statement on 12-Sept-2008 which was having misuse details so we spoke to following peoples for clarifying that it was not used by us:-
a) Mr.Sumit on 13-Sept-2008 Reference# [protected] (they said they will call back till 18-Sept-2008 but no reply). We also Paid 1879/- on 18-Sept-2009 as Mr Sumit told to make the payment of minimum due, which will be refunded once matter is sorted.
b) Mr.Viresh on 24-Sept-2008 Reference# [protected] (they said they will call back till 11-Oct-2008 but no reply)
c) Mr. Ajay on 20-Oct-2008 (we dont have the reference number as we forgot to write it.)

So please kindly sort this issue for us. We are your regular user since long and we have never been defaulted. We would like to have this card once all this matter gets sorted.

I also have Police complaint form for LOST of CARD.