Loading screen Bug

I just played some games to get rid of leaver buster. And then I joined a ranked game and once everyone were 100% full on loading screen and entered the game I stayed there loading. My ping was around 80 and the wheel on the bottom right corner was moving without problem. After 4 minutes the loading screen disappeared and I was moved to end game screen, following a 5 matches leaver buster. My PC and internet are functioning properly and I just lost LP and got additional Leaver buster for apparently a bug of yours. Please do something for it.