Tamil Nadu State Transport Corporation [TNSTC] — nanjil bus service

Dear sir,
I am traveling in nanjil 7 bus from nagercoil to chennai. I boarded the bus by 6 45 pm since the bus timing was 7. However the bus started its journey by 8 (1hr late). Now again it is going inside each and every bus stands (Tirunelveli, valliyoor etc).
My issue is nanjil express is a highway rider and takes 12hrs to reach chennai from the time of starting. And it will not enter in any bus stands other than end point. Also it will not hault at any place except two points for break. Now in tirunelveli stand it haulted and was taking passengers for 15-20 minutes.
If it goes in this way it will not reach chennai by 7as per schedule or 8as per travel start time.
We are booking this bus for efficient journey since it reduces the travel time. Now the story is opposite. Feels like traveling in a regular bus.
Please take a look into such issues and provide a pleasant journey since we still believe government transportation. Don't make us fools. Please