Regret to read about your experience. Not a pleasant one and agree that in these circumstances priority should be placed on client who have just purchased a piece that happened to pass Quality control with a fault. Especially since you are already in Switzerland where the repair will be made. Very disappointing I must say and hope they will make it up to you one way or another.
Regardless, the white 5711 is a piece that is very high on my wish list. Hope you will find many enjoyable moments with this and the bad experience will be a distant memory soon!