I, myself, have been a victim.
Right now, they have me on Xanax
(alprazolam) while juggling the idea of Klonopin
(clonazepam,) and for me it takes anywhere in the neighbourhood of 15 to 25 minutes to kick in.
As I have yet to take Klonopin, I cannot recommend it, outside of the success stories I've heard with it, but I'd suggest trying to get Xanax if they decide to ponder on it for a short time.