Working for Microsoft is like being a magnet for criticism and unsolicited feedback.
There's one guy I know socially who, in particular, loves to find anything he doesn't like about Microsoft...a product, the way an event was held, a website, a commercial...and tell me what he thinks.
I don't love hearing it....but then again, I do.
You have to search out the criticism, make people feel comfortable telling you about it, because if you do, you've got the dialogue started and you're one step closer to a better product or service.
It's great if all you hear is good news, but then again, it's a delusion. Get the angry folks to talk with you. Whatever it takes.