Terrifying Sounds On Doorbell Audio

I was sent a replacement doorbell under warranty and have had it set up for one day. There are terrifying sounds coming through the Audio like gutteral grumbling and breathing and sounds like someone blowing on a microphone. As if someone’s watching my camera with their microphone on. It’s completely freaking me out. I’ve completely reset the doorbell and it’s still happening what do I do ? Is this a faulty device ?