My usual experience with different airlines was that they provided hotel, that's why I am so surprised right now. The support agent said to get hotel ourself but they cannot guarantee the full refund. So I asked them to provide BA policy so we know which hotel can we book, but they just said they cannot provide it - no support at all. And the ground staff actually said that we will get hotel information on email - we never did. We just got any hotel cause we were super tired after this terrible day.
Plane was broken but they were hoping to fix it soon that's why they did not let us out of the plane.