The game just kicked me out

So I was playing champs and everything was fine until the half time came, then my screen froze and I got a message that I left the match due to connectivity problems, that was registred as leaving the match and I got a loss on the champs record, this was literaly 2 minutes ago and I didnt have any connection problems, I dont know why the game kicked me out if I didnt have any, I tried enetering the UT after the moment I got kicked out and everything worked fine (no connection problems at all), I would like to get that one game back if possible.

Thanks in advance.