Outreach Sales Development Representative interview questions

I had a 30 minute phone interview with a recruiter, who immediately moved me forward to the final interview round, which was three 30-minute interviews all on the same day. I was told that the first two interviews would be conversational and the third would be a mock call. I had planned on spending the 2 hours before the last interview prepping for the mock call, but the mock call ended up being during the FIRST round. Unfortunately I was completely unprepared, and the interviewer even said this wasn’t the first time that had happened. Other interview rounds went fine, although the job was consistently described as being “excruciatingly difficult”.