Mahindra Two Wheelers — Magnet coil

I am using 2012 Model stallio vehicle. My chains pocket and 3nd gear are not working properly. when i given for service in authorised showroom in chennai they too doesn't have parts and even couldn't able to arrange also. Also didn't give information who is the spare part authorised dealer to purchase directly. Even i contacted customer care they too didn't response properly. Facing lot of issues while riding. Plz help.