Rioter Account Removed From Friends List And I Didn't Do It

Riot Codebear was removed from my friends list and I had sent him messages regarding the game having errors in it that did not seem like normal bugs. Suddenly the account was removed from my friends list and I didn't do it. Seems as though someone is both hacking my games and has hacked my client, must be some pretty impressive hackers too considering the level of bugs going on in game, bugs that wouldn't happen such as extra damage with no extra items and that certainly would pull flags on riots end unless they were covering their trails, had 3 years in college for computer science and my games have definitely been getting hacked.