Oh ok..You will not get refund for Confirmed Tatkal ticket,only refund will be given for WL passenger.
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Since now the Prescribed time limit of cancelling at PRS is over, you must obtain a Ticket Deposit Receipt (TDR) from the nearest Railway Station within 30 days from the date of scheduled travel and then submit an application in the prescribed format to the Senior Divisional Commercial Manager of the Division or the Chief Commercial Manager (Refunds) of the Zonal Railway to which the Ticket Deposit Receipt issuing station belongs. The application should be...
more... accompanied by the Passenger Foil of the TDR.
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So I would suggest you go to nearest station and get these formalities done.After submission they will verify and send refund amount by post to your address.