Indian Railway Catering & Tourism Corporation [IRCTC] — ticket

I had booked a ticket on irctc on[protected]. But the ticket was not booked because of transaction failure. Amount of the ticket was deducted from my bank account. But after the failure of the transaction the amount was not refunded in my bank. Its been 1 week today and still the amount is not refunded by irctc. Please help me to get refund of my deducted amount. Will be thankful for that.

Ticket booking details from irctc:
Trasaction id - : [protected]
Total amount deducted : rs. 640.49