It's all a part of the placement process. If you beat them, you would have been placed MUCH higher. I play many ranked teams and it's completely normal. Expecially if you're smashing bronze teams in the first 2 or 3 games. Getting smacked by diamonds should not piss you off. Learn from how they smashed you and why you weren't good enough to beat them instead of crying about going against them. If there was a gamemode that put you with a bunch of bronze players against a team of challenger players, I would play all day just to learn more.