Vibration Issue Not Solw

I purchased this vehicle from A K AUTO , Miraj showroom about a year ago. From the very first service, I raised the issue of vibration with the showroom. To date, I have given my vehicle in for service four times, each time for around 5-10 days for a detailed inspection of the problem. Each time, the service center informed me that the R&D team inspected my vehicle and replaced parts like the rollers from the clutch, polished the fixed disc from the CVT, etc. However, the issue persists.
Additionally, within a year, my vehicle started having problems with starting. but there has been no improvement. My experience with the TVS team has been very disappointing. They acknowledged that there is a vibration problem with this TVS Jupiter 125cc vehicle, but to date, they have not shown enough enthusiasm to resolve this problem for customers.