NavVis Working student Cloud Engineering interview questions

The interview process included an HR introduction which seemed lovely at first then turned into a very irresponsible and horrible experience. Do not ever invest your time in this company. Even though I stated I am not interested in doing frontend task at all int he HR call, they said it is totally fine. Then I received a take-home assignment which consists of backend and frontend tasks. Even though the assignment states that it is optional to complete every question I contacted them right away to confirm if they sent me the correct task. I have not received any answer at all for a week. I completed the backend part and sent the task on time. Later on I received an answer saying they sent me the wrong test and they are not considering me since I am not interested in frontend. I ended up spending my one whole day for this nonsense. I have been interviewed in maybe 50 companies in my life and this is the worst of worst of companies. Do not ever think about working here.