Blue Apron Engineering Manager interview questions

Noticed a job posting on the Blue Apron site that seemed to match my skills and experience. Contacted recruiter on LinkedIn to talk about position. We scheduled a time for us to talk on the phone. When the time came, recruiter did not call. They have not tried to contact me since, and did not respond to email. Looking at other interview reviews here, it looks like this has happened before. Extremely unprofessional.