Unfair matchmaking

I (Gold 5) have had 4 games where 3 of those contained at least 1 plat enemy or even once a diamond enemy. This kind of this keeps happening. It may be because of playing with a higher level duo but still this isn't acceptable. We have lost every one of those games where there is an enemy that is above us by a division or two. Also the MMR difference is so crazy i have no idea how we got matched together in the first place. I have seen a range of MMR difference from the enemy being 300 MMR higher than us to them being 450MMR over us. This is the type of thing that would make me stop playing this game. I hope this can be fixed ASAP. http://snag.gy/BDYMY.jpg