My client crashing cost me my promos and I'm pretty pissed

Seriously? My client literally crashes and has to do a full repair before i can get into game at all, and it gives me a loss?? I win the next game and got trolled my third for a free loss. This is some bullshit. I'd maybe get it if i dodged or AFKed but my files just got corrupted OUT OF NOWHERE and i had to do a full restart. Is there any way to fix this? I was finally going to promote but got fucked by riots file system somehow.