Zendesk interview questions

I think they're a great company but the recruiting team is really disorganized. I was contacted by a recruiter for a phone interview, responded to the email and never heard back. I followed up a few days later, and still nothing. 2 weeks later I received an email from the recruiter saying they were going to offer the job to someone else (why reach out/ tell me that?) but decided not to so we scheduled the phone interview. The interview was great and the recruiter said she would schedule an interview with myself and the hiring manager and gave me a tentative date. I never heard back, so I followed up and still heard nothing. On the tentative date the hiring manager gave me a call out of the blue for a phone interview. I was caught completely off guard as the recruiter didn't respond to my outreach and never confirmed the interview. Needless to say I was ill prepared for this sudden interview while I was in the middle of a working at my current job and was rejected from the position a few days later. Don't get me wrong, I think Zendesk is a respectable company and I have heard great things from people who worked there, but I am completely turned off from the lack of communication within recruiting.