Railway Ticket — ticket issued with wrong ID no.

Railway Ticket — Wrong Ticket issued

Dear Sir,
We were a group of 15 travelling to Kerala which included 4 kids.
We have been very organised in the way ticketing was done as we booked exactly 90 days before both ways. The tickets to kerala were booked on the net we got comaprtments very far away so the next time i thought i would go personally to the reservation office at Goregaon Station in Mumbai (PLAGUED by AGENTS it was sick) to do a better job
Our travel dates were 25th december 2009 to kerala by Garib Rath from Mumbai to Kottayam. 2 Adults and 1 kid travelled a day before and were to join us in kottayam.
and 30th December 2009 from Ernakulam to Mumbai by Netravati Express. Tickets for 2 adults and 1 kid were done by them as it was diffiult to do all tickets as we did not know anything about group bookings neither do you highlight it anywhere.
I got two tickets booked in the same compartment different seat numbers all together. i was very excited about this but alas i had not checked the date on the 2nd ticket it was for 1 month earlier.
In all our excitement of the holiday, of being together looking for a good time we missed this one error done by the booking clerk.
Unfortunately we realised this only a day before we did not want to break the rules so we split the group the five o[censored]s quitely went back to kottayam and now half of the group travelled by train we had to buy expensive Plane tickets and come back to mumbai
The single error by an uncompetent clerk in the goregaon reservation counter has costed me close to Rs.50,000/- plus mental agony and a total mess of a well planned holiday.
How do i go on with pursuing this matter? What should i do? How do i get compensated for all this financial loss and agony?
How can Indian railways compete a eurail or british railways.
My cell phone number is[protected].
Please help me by addressing this issue at the earliest
Regards,
Thomas Chandy