Henkel Data Scientist interview questions

Very bad experience. They asked me to come for an interview and one day before the interview (18 days later), I got an email that the job was given to someone else. I was surprised, because I have booked my tickets and the hotel and it was impossible to refund the booking. I contacted them and told them that they have to reimburse me and the short notice is not my responsibility, they told me no this email was due to a technical issue, and the interview will stay tomorrow as scheduled. When I arrived, I can tell the interview was staged, and they wasted my time for nothing. The interviewers kept looking at their phones and counting down the time. Unprofessional and disrespectful. I wasted my time for nothing. I will never ever apply in Henkel.