Hero Motocorp — mileage is giving less than 48 to 50, the front side sounds while driving the bike

Address:

Udaipur, Rajasthan, 313205

Hi my name is narendra singh rathod
I have a hero splendor pro bike
Which is my papa nahar singh ji are registered with
I had served my bike from bohra motors fatehnagar
My bike service was not done properly and there is a voice from the front of the bike
And the average of my bike got worse, which is giving only 48 to 50
Setting the average of two-three times was not correct
And no employee is paying attention to this
Please provide tax help