Why?

Today I wanted to play a ranked game and just as I got into champ select, banned and picked my champ the power went out. I didn't care really until I power up my pc launch league login and see that the game started somehow when I wasn't even there... while I was reconnecting I saw hell. league turned off and I got the message "the match is over feel free to play another" WHY just why I got a free loss and a leave buster for something I couldn't do shit about, seriously makes no sense to me how this happened. This happened to my Bob boxr account