I took the tech test in April and got a phone call last month to interview. I missed that call, and madly tried to call back. Eventually I emailed the HR rep who had called me. She emailed back that due to my 1 Sep availability, I should call back in August. I had set a reminder on my calendar to do so, and instead I got an email today from a different HR rep offering me an interview on either 25, 26, or 27 Aug.

Excited for the call!