i guess leaverburster bug

i was on the game actually just stand waiting for adc's call i was support but somehow 3mins after starts game we defeated and i got leaverbuster for 5 games 20 mins i cant believe this before this when i got leaverbuster i agreed and never complained with that i used to played lol for 4yrs but firsttime like this happen i want to remove the condition for leaverbuster asap before i clear all 5 games thanks