Bejamas Project Manager interview questions

I've got an invitation to the skype interview. It was about 20-30 minutes long and with general questions about my experience. In the end I've got information about the next steps. It should have been an assignment, interview with other PM and with CEO. I had completed the assignment and sent a presentation. They confirmed that they received it. But no one has even reviewed it. And no feedback was ever received. Even after my reminder.