Hero Motocorp — regarding product

Address:

Chittoor, Andhra Pradesh, 517507

Dear concern,
I have booked and taken hero duet scooter on 21st of november 2017 at sri gopal hero showroom, tirupathi.
My vehicle number is ap03cg9524.

One service has been completed.
Before giving the service, i informed to service team regarding small issues at service centre.
Those are small noise and vibration sound is coming.
But problem is not solved. Still that sound is coming.in this regards again i have visited service centre which is located at tirupati.
Simple your service person is saying it is the name plate problem. It's not fixed properly. As per his words again i went to rto office and fixed the board properly. Again sound is coming as well as vibration also. But your team is not responding.

Now what can i do???
Who is responsible person for resolve this issue.

After get the new bike, few days only its works normally. After 20days vibration sound and noise sound is coming.
Same thing i convey to your service person. But not yet resolved

So kindly i'm requesting you, please rectify the my problem.

Regards,
S. Karunaiah
[protected]