Being Reported on by a known bot

[Nekodar]

I have screenshots of him teleporting around in the PvP arena. Reported him based on that too.. still have the screenshots handy.
It looks almost like lag, but he'll get pushed back by an ability and split second later he's back on his target.

I suggest capturing video next time instead of taking still pictures, that you can send to SE as proof. That would more readily support your position that the other player is cheating in some way.
That said, investigating botting/hacking claims takes more time as more evidence and analysis is necessary compared to harassment claims.