Aurecon Non Engineering Position interview questions

Time between initial application and receiving a call from the recruiter was over three weeks. The hiring manager was based in a different state so I undertook a phone interview. Was advised that the manager would be on leave for the following two weeks but candidates would be shortlisted for second round interviews during that time. I have not heard from them again even though I have sent two follow up emails. This was for a senior position, so I'm very disappointed that I didn't even receive an email to let me know that I was unsuccessful.