I Got a Recruiter’s Email to Schedule an Interview at Google, But Now I’ve Been Left in the Dark

I recently applied for an internship at Google and got a response from a recruiter at Korn Ferry last Friday, inviting me to schedule an interview within the next two weeks. I responded promptly, but haven’t heard back yet. At first, I thought the delay might be due to the weekend, but over a week has passed with no communication. I’ve sent several follow-up emails, but still no reply. Meanwhile, a friend of mine who also got an interview heard back within a day. Now, I’m starting to feel anxious.

What should I do next?