Disgusting manager

Disgusting and aggressive behavior of manager Keith towards staff member I via app and unfortunately ended up there. The delivery man was short x1 pizza. When he phoned to check Keith tore strips off him accusing him of the mistake. As a manager it lies with him to ensure correct orders. And to treat a staff member in that disgusting manner is not called for. This is not the first time I have witnessed thus from him. Hence the reason I prefer not to use that branch.