I mean, yeah, it sucks that they ignored it, but you did too, so, why are you complaining about your teammates when you are doing exactly what you are complaining about?
Don't assume. I didn't ignore it, actually, I was just Genji and he isn't that great against turrets because they don't do the massive damage of Bastion to make them kill themselves with reflect, and the Torbjorn killed me when I tried to concentrate fire on it. I say again, the worst thing about Torb, other than his shitty Ult, is that his turrets targetting is instant and it just frikken shouldn't be.
So I did try, but my hero wasn't as well suited to it as can be, but even when I got close, Torbs teammates also piled on me more than a few times. I guess you should argue that I should have switched, but then I'd have lost my Ult and I was waiting for a good chance to use it. I was willing to do what damage I could to it, but I did it with the expectations someone would come finish it off, and no one did.