Revolut Business Process Engineer interview questions

I read all the bad reviews in here but I said I would give it a go... First screening with the recruiter, he was late 6 min. He booked me in for an interview and wanted to prepare me beforehand. He booked me in 2 days before the interview and he never showed up. He then emailed me saying he had issues with the internet so he booked me in for 30min later and he was again late 10 min! On the actual interview, I was interviewed by a current employee who works on the same position I was applying for. For the first 15min I literally couldn’t finish a full sentence. There were times I inhaled and interrupted me before I ever started talking! It was so rude and it through my structure out of the window. He kept apologising but he carried on doing it! It was frustrating and I just lost interest here and there. If they hired me I would have to work with that guy! Imagine getting this in a meeting! I understand the logic behind being using current employees to interview people but there is a reason why they are engineers or work in IT and not HR. Make sure they know how to interview first before you actually put them down for it. He worked with the company for just 4 months as a process engineer, how can he possibly know how to interview people? I understand that my answers might not have given him all the information he needed but he could have gathered the questions and asked them in the end or at least at the end if the sentence!