Disgusting and unprofessionalism shown by the Admin of X

I want to report a very rude admin of X under @CastleLager ,I have plenty of screenshots I wish I know how to contact offices of SAB because we can't be having a useless admin like this ,you enquire about your prizes you won they ignore you ,they will post on their Timeline and ignore your inbox purposefully whoever runs that account they think it's their own personal page ,feelings don't work at home I'm doing all I can to make sure that he gets punished !