Fully understanding your emotions, don't get me wrong. But Apple has not broken law yet just by not giving an estimation on repair time. Dutch consumer law requires them to either 1) repair the MacBook Pro in a reasonable amount of time 2) or replace the MacBook Pro if unable to repair in a reasonable amount of time.
One point of discussion:
- What is a reasonable amount of time to repair a notebook? (Investigation time included)
I do understand Apple stating that they are investigating the issue, thus not being able to repair it yet, delaying the repair. Fair enough, if they are willing to fix it when investigation is completed.
I also understand that you don't want to wait any longer to get your MacBook Pro fixed, regardless of the investigation outcome.
I can confirm the tactic described above works best. As I had many troubles with the keyboard of my fourth 2016 MacBook Pro, I wanted to return the notebook. Even though I already was 1.5 weeks beyond my return period, with a gentle attitude but determinedly demanding for a replacement, Apple has replaced my MacBook Pro. I've only had great experiences with AppleCare / Apple Aftersales. I'm living in the Netherlands as well.
My MacBook Pro (bought at Apple.com) was replaced via Apple Aftersales by the way. AppleCare usually doesn't replace Macs unless that's the only way to 'repair'. My advise: contact Apple Aftersales at
0800 0200 570 (choose option 4 in the option menu, then enter your order number followed by a #). Explain them everything.
First, start the conversation on facts (the problems you experience, how long this is going on now, your experiences at the Apple Store, etc.), then express your feelings (how disappointed you are considering it as a high quality product and it's premium price tag). Then kindly but determinedly demand for a replacement. That should let them take care of your MacBook Pro. If they replace your MacBook Pro again, it will most likely be replaced with a MacBook Pro 2017 same config, because retail-boxed MacBook Pro 2016's are not in stock anymore.