Which type of Mk8 do you have buttons?
Have you looked at the software versions?
Ive got a GTi but truth is, im finding myself tell people more and more that "its my wifes car, not mine!" ha
I havent looked at software versions or updates yet but 2 weeks after spending £30k, i feel that i shouldnt have too!
Well, its rather important as they are busy resolving software issues.
It seems:
1) updates for the infotainment is OTA - do that yourself
2) updates for anything else is a dealer only job - check your software version - 1668 seems to fix a lot of things, if you don't have this version, book it in to get it fixed
Those are the solutions to your problems almost certainly.... although I don't think 1668 is all totally bug free yet.
Short of buying something old or a Caterham, this is the world of the modern car. Get with the plan is all I can say...