Irctc — Cancellation not possible for Waitlisted tickets

Hi,

I booked my train ticket online via www.irctc.co.in. It was waitlisted even after the chart is prepared. Since I cannot travel on a waitlisted ticket I have decided to cancel it. However system throws an error, "Ticket cannot be cancelled since chart is prepared".

I am neither suppose to travel nor cancel ticket, what does it mean? Look at the height of cheating that too by government org.

Here are my train ticket details:
PNR No: [protected] Train No. & Name: 17210/SHESHADRI EXP Quota: General
Transaction ID: [protected] Date of Booking: 29-Feb-2012 10:04:57 AM Class: SL
From: VIJAYAWADA JN(BZA) Date of Journey: 15-Mar-2012 To: KRISHNARAJAPURM(KJM)
Boarding: VIJAYAWADA JN(BZA) Date of Boarding: 15-Mar-2012 Scheduled Departure: 23:05 *
Resv Upto: KRISHNARAJAPURM(KJM) Distance: 0708 KM Adult: 02 Child: 00