lost lp without playing the game

havent played the game in about a week but i knew i had about 52 lp in gold 1, ive just logged on and seen that i am on 0 lp. I've checked op.gg and it doesnt add up, my last game i played i was in gold 2 apparantly but the game before that i was in gold 1, but both games was victories and you cant get demoted winning a game. So basically riot as took my lp for no reason.