I WANT MY LP RIOT

Okay so just a few minutes ago i was playing a rank game, and we were slaughtering the crap out of the other team. but around 22min or less i dont remember. we had all of the enemy inhibs down and was about to end the game. But then my league just ended up disconnecting and i checked for league patches and if the na server was still on and it was. so i thought ill just exit the game and join again but when i did exit the game, it didnt bring back a join back or anything like that no notification of a patch. i went to check my match history thinking oh maybe we won already but, when i checked my match history it was like that game never happened. im really upset and want a explanation @riotgames