Cistec (Switzerland) interview questions

3 Interviews plus homework task. Interviews seemed very easy and badly prepared by the company. Homework task required handing in a PPT presentation. The problem statement was related to the companies business domain and gave me the impression, that the company is fishing for ideas. Received no feedback for a week, then asked about the status via email and got a a very generic rejection within 30 min after that from a person that I had not been in contact with yet during the interview. Very unprofessional experience overall and unclear to me if they actually want to fill the role. The role is still online 3 months later.