[Bossman]

I have also received thhose message a few times (regardless of calling card used) while calling my Virgin-Uk number from here. I just call right back and it usually goes through. Yes. on those occasions the phone was off.

BTW, you can let the phone ring through to VM if you want. You will not be charged a roaming fee because it rolled to VM (Like the US carriers do). I know that for a fact. I have received VM messages several times on my virgin sim with the phone being on and have never been charged for roaming because it rolled to VM. I even call the number from another phone (with the phone being on), let it roll to VM, then hit the # key to check my VM messages from here.