clobazam is prescribed in oz., no? and if your doc's ears are closed to suggestion, that sucks, man. thing is, you don't need a doc to get etizolam. maybe push for the loraz'.
lorazepam is a fast acting fucker but, as stated above, if you've had problems abusing benzos, then regular exercise is the tits for reducing anxiety levels without risk of developing another habit.
edit: also, if you're serious about not abusing benzos anymore, and are using them to counter panic attacks, then alprazolam seems ideal. the trouble is, they are a bit too delightful, so it might be hard to use them only as required. i would consider this, then maybe try another doctor.