Glanza no you can't as far as I'm aware. But then again if you are getting multiple 7 days bans it's no one else's fault but yours.
iamtheoneneo you can either blame your team mats or concentrate on your own game. I suggest the later as that is something you can work on, you can only hope for the best with team mates. At most levels it's easy enough to solo carry the whole team, do this and your team mates won't matter.
Yup if you can't carry your team you're in the right rank.