Make a button useless, possible?

[WhyKlef]

I don't trust my TP, the slider is shaky and feels like it's gonna snap any second. I'd like to have it exchanged under warranty but I doubt they will for such reason.

Is there a way to make a button not functional in the OS for example the Volume buttons and leave no trace? (Adv. configuration?)

I know it sounds screwed up but I don't feel like having a big corp tell me that it's not 'broken enough' to have it exchanged. And I don't trust a repair job as it is often neglected and the socket for the screw/s holding it all may be loose.