Banned until June 20th, 2016, says to check my email why, but there is no email?

I played 4 games this morning, and I won each one without any bit of toxicity from me or any team members. I come back a few hours later to play, and when I tried to log in, it tells me that I am banned until June 20th, 2016. I still did not get an email from Riot.