Slack interview questions

I applied through Linkedin and got a response from Recruiter. We had initial call and recruiter asked me to submit my availability for technical interview. I submitted my availability but never heard back from a recruiter. Followed up several times for 3 weeks but never received any response. For last follow up email I received automated response stating the email address doesn’t exist. Apparently the recruiter left the organisation and my candidature was lost during handover. I tried reaching out to another recruiter on Linkedin but my request was declined. So, my impression - is they don’t value the candidates and if they can’t value the candidates I doubt they value their employees.

Recruiter round. First round is 1.5 hour deep dive into your resume (all the way back to undergrad), no need to prep with understanding of Slack. Second round is 1 hour presentation covering your background, deals you've sold in the past, and how you would sell Slack.