Castiel. I was friends with him in another kidnapping pocket dimension, just not this one. Knew you and your brother, too.
Since I'm not reading through the comments to see what people have explained to you, I'll risk repeating it. Your god probably didn't send you here. He probably has no idea you are here. It's a bit like bi-location, you're here and you're also home, probably trying to save your world or whatever. Eventually you'll be sent back. Average tends to be about six months, but I've also been gone for about four years so... take that as you will.
Your world seemed bit on the meta so the fact that there's a Supernatural TV show some people may be familiar with probably won't be as big of a shock to you as it would be to other people just arriving.
This is my third kidnapping pocket dimension, or as I like to call them KPD, ask me anything.