This just happend to me.

Ok well, i was playing NORMAL game as LEONA SUPPORT, and at the start we had a .. idk. weird mf who started top with garen later switching to mid than bot.. anyways i died twice early game cuz of BLITZTAR combo and yea.. as the game kept going an spams of a garen saying I'm a noob and only support should buy wards spamming in the all chat i was noob etc, and the Deathcap stacking morgana calling me "not a tanker(tank?) and noob", I had lots of stupid deaths yes, but in the end i ended up 4/13/24(something like that) and I honestly won alot of ours team fights as I was playing leona, I only explained that everyone should buy wards, and telling him he isent as good as he thinks and so on.. After he told me he has 2k elo last season.. (200 normals played) he then proceeds to tell everyone to report me... How do i respond to this?. i reported him for harassement after we won(good nocturne) and then left.