Mace interview questions

I had my 1st interview in Mace's office at the end of March. After the 1st interview, they called me to tell me that I have successfully passed the 1st phase and invited me to an assessment day. I booked the tickets for the assessment day and 5 days before the assessment they call me again to tell me that it is canceled and that I will have a second stage interview instead. The 1st interview was good. The second one was a bit awkward because they asked exactly the same things even though they had the notes from the 1st one. At the end of the second interview, they tell me that I will have my feedback within 10 days. The negative response came to me 28 days later. The worst thing is that when I asked for detailed feedback the HR Recruiter never responded to my emails and also they never paid the travel expenses as it was agreed from the beginning. Summary -Good and friendly personnel inside the company -The least that I can say about the HR department is unacceptable behaviour.