@manishjain251985: Re# 223309-3
Automatic cancellation and refund by IRCTC is done only in case where the full ticket against one PNR stands waitlisted at the time of chart preparation. There is not auto-cancellation and auto-refund for partial WL/RAC ticket.
A certificate can be obtained from the Ticket Checking staff in the train regarding non-travelling of wait-listed passengers on such tickets and refund can be obtained thereafter by sending TDR request to IRCTC.