Hero Motocorp — two wheeler configure problem

Address:

Paschim Medinipur, West Bengal, 721201

Sir,
I koustav ghosh from chandrakona, i buy a new hero maestro edge on 15/05/2017 it have a sound problem from the body of bike from buying time, but after two servicing hero showroom does not clear the problem. I buy the bike from anu auto centre, chandrakona, paschim medinipur. And also servicing to hero main showroom palco automobile. Midnapore town. But the bike still have same problem. Its a manufacturing deffect but hero showroom can not solve my problem. Please take a step and solve my problem. I also give all details of bike bellow.
Model - maestro edge-zx
Registration number - wb34bb5579
Owner name-koustav ghosh
Owner mobile - [protected]
Buying showroom name - anu auto centre, chandrakona, paschim medinipur, 721201
1st servicing main showroom - palco (Hero) automobile, midnapore, 721101