ICICI Bank Credit Card — Unavailable of Credit

I have paid my total and other charges amounting to 15, 306 on 20-02-09 as per statement of 15-02-09 and my payment was received by the company on 24-02-09 but till to day I am not able to know my available Credit and also my card is declining to transact . The company should inform me the reason for non transaction and the amount available in my card .