Gsrtc — Bus left 15 min advance in time from bus station

Address:

Gujarat

I am a female and had booked an online ticket on gsrtc website for travel from nehrunagar, ahmedabad to baroda. The bus departure was scheduled at 6:30pm but it departed from nehrunagar station at 6:15 pm. My relative who had come to see me off from vastrapur had reached much ahead in time and he is an eye-witness of the same. When I reached the station, the person at the counter told me that the next bus is at 7:00pm and the earlier one departed on time, its time was 6:15pm !! his argument was that the bus timing at 6:30 is from geetanagar bus stop. But my ticket says that my boarding at 6:30pm is from nehrunagar. I felt cheated. But had no other alternative, had to purchase another ticket for 7:00 pm bus !!
the trip details are attached below for kind reference. I want my rs 192 back, with a message to the gsrtc guys that they cannot fool the general public.

Trip details

pnr no. :G2891472
trip code :1815nhrnrbrdv46
date of journey :05/06/2012
class of service :volvo
passenger start point :ahmedabad
passenger end point :baroda
service start place :nehrunagar
service start point :nehrunagar
service end place :baroda
service end point :baroda
no. Of seats :
1 (adults=1 :children=0 )
seat no/S :5

passenger information
name:niva bhandari
age:29
adult/Child:adult
gender:female
ID card type:pan card

fare details

basic fare:
rs. 160.00
reservation fee :
rs. 20.00
accident insurance charges :
rs. 0.00
toll fee :
rs. 7.00
service charge :
rs. 5.00
toll fee rajasthan :
rs. 0.00
other levies :
rs. 0.00
concessions :
rs. 0.00
discounts :
rs. 0.00

total fare :
rs. 192.00