I haven't been able to play LoL for 4 days

First day i tried to play and the update started, then when the update finished my league client stopped working. I oppend the game again and i had to wait again for the update to finis,and it never did, and this happened like 5 times, I went to riot's page and downloaded the repair tool and now when i open the game it loads "checking for corruption" but then it starts repairing but it fails. Can somebody help me I tried everything?pls