As stated above there's other methods you can use in the case you get no response from CallAdmin such as via Discord, contacting staff over Steam, and filing reports on the forums (though I don't recommend the latter if you're looking for a more immediate response).
However we can't simply hire more staff, we have a high standard for staff and so, until we get any suitable applicants for staff in the future, we won't be recruiting any new staff anytime soon.