Been there, experienced that. So i completely feel you. I've learnt to control my anger though in this kind of situation. lol. Believe me, you would be surprise to learn how many incompetent drivers are out there driving among us. So calm down
Another thing to watch out for at parking lots of shopping centres are those kids who collect the trolleys. I almost got hit on the side by a whole row of trolleys last week when driving out of the parking lot. Ignorant bastards.