Irctc — Ticket not booked but service tax deducted

Address:	Gurgaon, Haryana
Website:	Www.irctc.co.in

Hi, I had booked ticket from irctc in tatkal on 27th Aug, There were two transactions I did, one for 4531 rs which was not confirmed so I had to cancel the ticket as it was in waiting and was of no use, irctc returned only 4290 rs. The second transaction I did on the same day was for booking premium tatkal in same train as my previous ticket was not booked. For this transaction, the ticket did not book as the tickets were not left though they diducted amount 10425 rs. When I got the refund only 10215 rs were refunded. What I need from these online services is why are they not refunding the whole amount. They deducted almost 500 rs from a common man pocket in just 2 failed transactions.. God knows how much they would be earning from these failed transactions.