If a Waitlisted/RAC ticket is presented for cancellation, refund of fare shall be admissible after deducting the clerkage.
(i) The ticket is presented for cancellation upto three hours after the actual departure of the train irrespective of the distance.
(ii) The passenger may get the tickets cancelled from any PRS counters or the designated current counters.
(iii) No refund of fare shall be granted...
more... on RAC ticket /Waitlisted ticket after three hours of the actual departure of the train.