Tamil Nadu State Transport Corporation [TNSTC] — tn bus issue

I've boarded bus at 10:30 pm from mayiladuthurai to chennai, now the time is 2:41am, within 1hr i have to reach thiruvanmiyur, but still we're in starting point of the ecr due to bus having some technical issue. Without resolving the issue the bus will not move.
Query: without checking before travelling how can take the bus to drive for long? Is the bus really got an approval from respective person before driving?? If some one having health issue what will you do at the point of time??
This bus really unfit to drive (There is no hammer too available for an emergency) the driver informed us after half an hour about the issue. And they let us know to transfer another bus after their long discussing. Is this the correct way you are treating us? Still we don't know how long it will be taking to transfer to another bus. Really its very frustrating.
Request: please don't take the bus to drive before checking the fitness.
Important note :- attached ticket copy for your reference.