I dropped Coolrulez an email a while back, and got a reply fairly quick smart (ie. within about a day).
He recorded some very good samples for me, and in short order too (only a couple of days from start to finish!)
So my latest mission will have some very nice Russian radio chatter
I can't recommend him highly enough, I was very happy with his work.
I'm not sure if he's on holiday... I got an email from him yesterday, but he might have gone away for the weekend or something.
Anyway, I suggest you keep trying him, as it's defintely worth it to add a bit of Russian to your mission