Trouble contacting alumni interviewer

<p>So my alumni interviewer from one of my top choices contacted me about two weeks ago, leaving her phone number and whatnot to have me call back. I called back and left her a message, and a few days later she leaves me another message giving me the days she is free to interview.</p>

<p>I have tried to call her back since that last message 1.5 weeks ago to arrange a time and place but she never picks up her phone. I have also left roughly 3-4 voice messages and given her my email in case email is a more efficient method.</p>

<p>Her phone number is the only way I have of contacting her, but I don't want to call her more in case I seem like I'm being a nuisance. But the delay is starting to fray my nerves a bit. Any advice?</p>