TEAMS SO BAD, I CAN'T CARRY... WHAT DO I DO?

whatever reason, I was Gold 1, on a promotion match to Platinum 5. Since then my win rate is about 28%. I lost that game and have slide all the way to Silver 4 demotion match. 2 out of every 3 games I'm getting people on my team INSISTING to play Raynor. The only way I can stop them is if I get the ban. 
 

 

Please Help !
Thanks !

I didn't find the right solution from the internet.

References:
-https://us.battle.net/forums/en/heroes/topic/20759358288
-whiteboard animation examples