royal Enfield, nandi motors, nanded - external damage of my vehicle royal enfield during servicing

Myself, mohammad fayyaz
I purchase a new royal Enfield classis *** cc. Bullet from nandi motors
At the time of first service, showroom staff broke my engine cap, during oil changing
They roughly used a hammer to open oil cap instead of using screwdriverb,incase they damage my engine as well as colour at the bottom
They also stoled my back disc during servicing, and replace with old disc, at the time of delivery I saw the bad condition of my bullet, then I argue with the staff called as zaheer, and other one, they literally avoiding me, using vulgar language and just making my fun