ranked game messed up after 3 minute mark

so i had a ranked game which went even until we reached the 10 minute mark. i was and had a support. had connection problems which pretty much messed up the laning face. he continued to reconnect and disconnect and later in the game our also left the game. because of this i actually lost all my lp and i checked on the account of my support and saw he still had 16 lp after that, same goes for the of my team. i dont think this is fair since i tried to play as good as i could when our team were draw at a disadventage.