hawk37, i quite don't get your point, mate sorry.
You have read that the entry clearance has been refused, ergo there's nothing you can do, except to turn around. Otherwise you will be treated as an intruder and that's not funny. I am not sure if you would like to spend some years in Chinese or Mongolian prison? There's no need for agreement of refusal among ATC centres because its commander decision what to do. He/ she either comes back or lands somewhere. As long as they stay within the previously cleared portion of flight, they just have to coordinate their actions with ATC.
Cheers.