ONLY Group interview questions

I had an interview at ONLY in Vienna. The conversation went well, and the manager seemed friendly and professional. I was told that I would receive feedback by Monday, regardless of the outcome. However, it has now been over two weeks, and I haven’t received any response. I think it would have been more professional to at least send a short message or email to inform candidates of the decision. The interview itself was pleasant, but the lack of follow-up communication left a poor impression.