Sorry to hear that.

I'm surprised they didn't even offer to let you see someone else in the same office (unless your nurse practitioner is the only medical professional in the office). Or, at the very least, they should have made recommendations over the phone. Shame on them for not helping.

When it comes to voices, I find it helpful to listen to something w/ headphones. For example, audiobook, TV, music, YouTube, etc.. The headphones really do a good job of blocking out sounds and providing temporary relief. Though, YouTube is best for me because I find it more distracting since I have audio and visual stuff to distract me at the same time.

Another thing you can do is just put on music in your house/apartment, like through a speaker or something. Just play it out loud and really focus on the lyrics. Use Spotify to find some songs you've never listened to and then analyze the lyrics. You're engaging your brain and drawing focus away from the voices.