Slack Customer Experience Agent interview questions

Long. I went through five individual interviews across three weeks ranging from 30 mins to 1.5hrs all while working at my current role. Everything was positive until the 'final' interview where the last person I spoke to did not seem like they really were interested from the second they walked into the meeting room. I was left on hold for about two weeks after the final interview in which I was sent an email saying you were great but we are not what we are after/heading in a different direction - The usual copy paste rejection you would expect from a large company. I emailed a follow-up request with HR to ask for feedback relating to my strengths/weaknesses and was simply told: no, we will not/do not provide this information. I sent a followup email asking if they could explain why this was the case and if I was more suited to the other role I was in the initial interview phase for. I received no reply to this email so I decided to withdraw my application for the second role as to not waste more of my time. I found this whole experience confusing after as the floor manager's conversations were along the lines of "when we start you next month we will x, y, z" While the management was faultless in their engagement, the HR could performed a little better

I applied with my CV and cover letter and I received confirmation of my application. I got an email after a few days asking me to do a writing assessment within 48 hours. Not long after submitting, maybe a day or two, I got an email to set up a phone call to speak with a recruiter. After the call I was set up to have 2 phone interviews with managers. After a couple of day I was told that I would be moving into the final interview stage. Which was an afternoon in their office, where I had 3 interview with about 5 people in total and a written assessment .