Similar thing happened to me. sent to, and stood down on 3 jobs, 5 times in as many minutes all at different compas points durring insanely heavy traffic. All initialy coming through as "General Area Of" before getting the address, having to turn round in heavy traffic, blast back in the opposite direction to where we came from, no doubt annoying the public more than usal by making them slow down and may be even stop for an Ambulance twice. Finaly left to run on a new job at a GP's surgery. Got there to flnd a man about to breathing his last in a packed waiting room! When we arrived at A&E and were clearing up, realised the last job was an Urgent! In all the confusion of stand downs, activations, U turns, 3 point turns, we missed the job coding, but in a way it was a good thing we did otherwise this poor guy would have been dead. But hey, we were mobile within 40 seconds, and got to an hour Urgent in 5 minutes! So some one, some where is happy!