Getting 4 reports for nothing?

I've recently encountered a player and they have reported me 4 times (Since I've gotten into a match with them 4 times). I've done nothing wrong, I wasn't toxic and I'm confused as to why they're reporting me. In a game where I got mid, they banned my Lux even though it was shown that I wanted to pick the champion. I was then forced to play Ahri even though I was a bit rusty on her and ended up feeding a bit. Everytime I died, they would ping my death. I don't know what I've done for someone to hate me so much
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