Report system useless?Someone afk the last 20 ranked games(no items too) still unpunished.

[Look him his match history on here]( This guy intentionally picks and ban the champion we declared that we wanna play. Curious of this guy's background, i go to look his match history online. This guy has been afking 20 GAMES IN A ROW WITH NO ITEMS(score 0/0/0). Without surprise, he is also afking in the game im playing. How can someone like this still go unpunished in ranked games? Its players like this make bronze hell, not the skill level. Please... permaban this guy.
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