Tvs Motor Company — defect vehicle and worst sound in engine

Address:

Bangalore, Karnataka, 560072

Tvs company, i have taken the tvs zest 110 from speed motors basaveshwara nagara. From the day one i am facing one or the other problem.
1. Free petrol given had lot of dust and carporator was leaking petrol
2. After first service oil leakage
3. Engine have a humming sound while riding
4. Now it is very horrible sound for just 2000 km.

Issues are not fixed yet and causing lot of problem