UBS interview questions

Interview process was such a nightmare. My interview were rescheduled many times. They were not appreciative of my time. The HR was based in out of country. They did not understand the concept of time zones. I asked to confirm the time zones and they weren't being clear about it.

Resume shortlisting then test consist of 3 rounds , easy just maintain the speed and perform good in cultural behaviour , called at their office for interview, they asked me the question on topic which was mention in my resume but I didn't highlight in the conversation and grill for long time