Travelling - Train route diverted without any prior announcement

Dear Sir,
I purchased one e-ticket as detailed below:
1. Transaction id : 0224484039
2. PNR No. : 6343396223
3. From : HWH to PTRU
4. Date of Booking : 25.06.10
5. Date of Journey : 29.06.10
6. Name of Passenger : B PAL
7. Sex : Female
8. Age : 63 yrs.
9. Train Name : Shaktipunj Exp.

Before boarding from Howrah station I enquired at Enquiry Counter twice whether the train would travel through Patratu Station since it was learnt sometimes the said train was plying bypassing Patratu. But each time they confirmed it would follow its normal route through Patratu station.

At Dhanbad Station it was learnt the train would not go to Patratu and I had to drop at Dhanbad.
Now my questions are :

1. Why it was not announced at originating station the route of its plying ?
2. Why the TTE on duty did not make me alert to drop at Dhanbad?
3. Why Dhanbad booking counter / Station Manager refused me to refund Rly Fare from Dhanbad to Patratu?

I think you will understand the difficulties of a Sr. Citizen Female Passenger traveling alone and faced the above cited problems.

However, I again claim to refund the Railway Fare from Dhanbad to Patratu at the earliest.
Thanks,