Materialise interview questions

I had two interviews with Materialise in Leuven (BE). After the first interview, I was immediately invited to the next round. After the second interview there was no follow up for about 4 weeks. So I decided to e-mail my contact person for a status update. Unfortunately, there was no response to that either. Materialise, candidates deserve a valid explanation after the time and effort they've put into their candidacy. Ghosting candidates is not a good idea with corporate branding in mind. Or is this a sneak preview of the corporate culture?