Does nobody think in the training server

I was JUST staffing ATC tower at EGLL, and I got overwhelmed by the incompetence of ground, approach and the pilots. They're all lined up for 27L (clearly RED as in DON'T USE) and inbound keeps sending them in for 09R. Then after everything is clear at 27L there are aircraft taxiing to 09L, 09R and 27R.

Why can't I decide which runways to use? Why can't I deny takeoff clearance and order aircraft to taxi to the other end of the runway that is clearly being used?

Sorry, I just got pissed off so much.