My account has been hacked into and someone said messed up things and inted and got me a 14 day ban

July 23, 2018 11-1 PM someone played a Zed and Rammus game in Normal. I ended up getting banned for 14 days and ended up losing all my rewards at the end of season. This all happened when I was going to bed and I was checking on my stats on Op.gg and saw that I was in a live game. I then replaced my old e-mail with my new one and a new password. After logging into my account I saw that my account has gotten a 10 game chat restriction and after re-logging again I saw that I had gotten banned for 14 days. Please help me I did not play those games I swear on my life. Please Riot <3 Thank you.