I'm AFS Spain na, but I change host too.
My host(my ex-host hahaha) are hard working. But I don't know, your story it's same at mine.
Like I have to bought for food, they count me for photocopy (of couse they have photocopier)
I don't have bedroom, and my ex-host have a dog,,, It like a hell for me :(((
But I didn't tell my contect cause I wanna try to live with them, but when I relized that I couldn't I tell her.
At first she said I can't change host, then she said yes then said no, and now i'm here,,,
far from my old town other side of the country XD But I think you should change host na
(When I change host I cry a lot cause my friends and teachers are so nice T T)
I know what it like, do you have a Skype? you can add me.
I know that I'm not AFS USA, but I can give you advice if you want :)
PS. Sorry for my poor English skill XDDDD