Very bad experience with Tata bolt car

I bought a new Tata bolt car for commercial purposes at Salem Truesai works. Really feeling ashamed of owning a Tata car, I'm owning a Tata bolt commercial car from February 2018, from the beginning itself I'm complaining about clutch in Tata Truesai service center Salem. But they didn't accept, in 15000 km running I had fought with Truesai service center and then they accepted the complaints and said Flywheel is the problem and then they replaced Flywheel and clutch plate. But after that also it is not cleared, the clutch jerking problem continues, again I made a complaint. Second time dismantled and said Flywheel should be faced and mounted again, but the problem not solved...For the third time they again changed the clutch and clutch release bearing and flywheel and cylinders also, but now also the same problem repeats . Now they are not taking any action, they are very irresponsible and bad behaviour. Tata product is so bad..