Kolkata Metro: The only Metro of IR. কলকাতা মেট্রো : তিলোত্তমার জীবন রেখা ।। - PPG

My www.indiarailinfo.com/pnr/post/1747658 is booked from Rajkot with boarding from Kota has ended up in RAC after charting. We can now get refund on RAC/WL ticket upto half an hour before the scheduled departure of the train. Should I cancel my ticket half an hour before the departure time from Rajkot, or half an hour before the departure from Kota?
Please help!

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