Force Motors — tempo traveller 3700 super 17 seater

Address: Indore m.p.

I bought a 17-seater Travller from Betala Motor indore (m.p.) last year.
I have problem in gear box from the beginning.
I am complaining about the gear on every service, they also removed the gear box 2 times and repaired it, but the gear problem is not getting right.
Right now the car has run only 50000 km and has opened the gear box twice but the problem is not getting solvent.
Please help me, I am tired now, I will have to go to consumer forums and take legal action Against dealer and force company.
I hope you will understand my problem and overcome it with hope.
Thanku