Player Toxicity - Death Threats.

Had a game yesterday and one of our team members issued a death threat to the entire team. Obviously reported them hoping for a ban etc. Logged back on today and have not been shown the 'Action has been taken' pop up box that *occasionally* appears. It's seems like every other game I have to report someone for toxic behaviour, and very rarely see any action taken.. Is the report system just completely ignored? Does Riot not care about it's playerbase and is happy for people to issue death threats against each other?
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