IRCTC refund rules: How can you get a refund of confirmed railway tickets after chart preparation

According to Indian Railway Catering and Tourism Corporation (IRCTC): E-ticket cannot be cancelled after chart preparation. Users are requested to use the online TDR filing for such cases and track status of the refund case through tracking service provided by IRCTC. TDR can be filed as per Railway rules." Know here how to file a TDR.