A plea from a casual

I guess this goes here, it's regarding matchmaking. I'm Bronze V, I'll save you the time, but it's only because I don't play ranked. I normally get put up against/with silvers at least, some golds and even a few scattered plats. However, for some reason lately I'm being matched with bronzes who belong in bronze, and having to try to carry them against the higher elo current so to speak. I'm fucking sick of it. I can't win a game no matter how much of a lead I build up. Even if I come back from my jungler just running into a 2v1 when I had 2 hp and giving my lane a free kill, even if I manage to get triple my opponent's cs at 10 minutes, I can't carry. With Jayce for fuck's sake. Fix this.

Edit: The Jayce thing may give the impression that this was a one-time occurence. It's not. Every Rift game I've played, I've had an early lead but was dragged down by my teammates. Look at my match history graph if you want proof.