Couple of days back heard Jeddah controller going crazy calling a reech aircraft, with no reply, for at least 20 mins. The guys climbed from FL220 to FL330 without clearance. Lots of aircraft vectored out of his way. It then took about 10 mins for these guys to understand their routing, blocking the freq for everyone else, embarassing is not the word. Nobody was surprised cause they do this stuff all the time, ask anyone who flys in the gulf region. When you hear them you pay extra special attn to TCAS.