8 inch MIB2.5 Volume button acting erratic

Hello everyone!

This is my first post on this wonderful platform for all you Skoda lovers. I recently procured myself a MK3.5 VRS230 in India! I got it second and and the car is in super mint condition but the only thing is that the volume knob works erratically and lowers the volume on its own. It works just fine to power on and turn off the screen, but the volume literally cannot be changed by the infotainment screen leaving me the only person capable of turning the volume up or down through the steering controls. What solutions possible to get a cheap fix for this. For reference my infotainment is 8inch FL MiB2.5 with the complete glass panel style screen with 2 buttons on either side. 

Any help, advice, solutions are welcome. it's really bugging me since the rest of the car is pristine!

Vedant