How this can be autorized?

Hello, a player abused pvp to erase my hardcore character instantly
I have a video that proves it IS THIS LEGAL TO DO THIS ? Diablo 2 Resurrected 2023 04 23 18 48 43 41 DVR - YouTube

I would obviously like to have my character restored to me, but if this is not possible it would be good to sanction this kind of behavior

close to never starting the game again…

PS: their is no other way to contact support…