Johnson Controls interview questions

An average interview, but no reimbursement of travel expenses. I was approached via Linkedin for this role. After a telephone interview I was invited to have an interview in Bratislava. I live in Prague and traveled there for the interview, 650 kilometers/400 miles there and back. I was promised travel reimbursement. The interview was what I would normally expect. I was interviewed live by the Regional Finance Transformation Project Lead E/A, Regional Transition Lead and via video with the HR director BA. I did not get proper feedback (a 'no' would have been enough), but worse my travel expenses were not reimbursed, despite several reminders from my side. I took a day off and traveled there and back just for this interview. I have been in contact with all people involved in the recruitment processes, and sent them several reminders. Despite responses that there would be a follow up, nothing has happened until now.