Zearn Translator Associate interview questions

First, a normal interview where they went over my resume with a bunch of questions. Then a take on task with a 2 hour exam to test my skills. Then another interview with the translation team where they asked more questions about my translation experience. Then complete silence for a whole week. I emailed them to see what was going on and they told me they chose someone else. Very unprofessional to go through 3 steps in the hiring process and then ghost me.