Without wanting to be too much of a debbie downer, I had a truly dreadful experience with a B&O dealer in the UK several months ago and when I contacted B&O, they could not have been less interested.
I contacted them directly and via social media. Perhaps an email to the CFO/CEO might have some impact, but by the time I'd finished all the backwards and forwards, I was out of patience and energy to pursue it any further.
Share your experience here, and on social media if you really get nowhere.
Good luck!