Indian Railway Catering & Tourism Corporation [IRCTC] — cancellation fees for sleeper class train ticket before 15 days of travel

I have cancelled irctc train ticket vide pnr [protected] for sleeper class, the ticket is booked for 26-nov-17 travel, but i have cancelled the same on 10-nov-17, the cancellation fee charged for sleeper class was 120/-, as per irctc refund rules e-ticket cancellation fees for sleeper class is 60+20+applicable tax, where as irctc deducted 120/- from the amount i paid, which is totally wrong, i called irctc and explained and they do not have any answers for this.

The refund policy is not clear and they are were deducting too much.