Dear @Rajkumar_Janarthanan ,
If you’ve gear-related issues with your Honda Shine 125cc despite having your bike serviced multiple times and the problem persists even after multiple attempts at repair, file a complaint with the Honda Motors’ customer service department.
You can call at 18001033434 or email customercare@honda2wheelersindia.com. Please provide them with the details you’ve mentioned in your post, including your bike’s registration number (TN 07 DA 3582) and service records.
For more help, read: How can I file complaints about bikes of Honda Motors?