Are you sure your pills were legit?
NEVER take 60mg of a benzo because you don't think it's working.... That's highly idiotic, what if you aren't even being sold a benzodiazepine? What if it's just a fake pill?
Don't ever take that much again please, it's so fucking bad for you, you have no idea. Trust bro, I used to take 250mg or more of xanax per day and was addicted to benzodiazepines for over a decade.
Clonazepam also does not work with me (never tried South African brand that you must have) I can take a whole bottle of K-Pins, and barely feel any relaxation from tension/anxiety, but this is just my subjective experience based on, to what I consider, a worse version of a breath mint.
I'm one of the only ones though, everyone else here seems to love clonazepam (Klonopin) but my body metabolizes it into sugar or something hahah.
Anyways, this is a serious issue, you need to contact the proper medical authorities ASAP, DO NOT DRIVE YOURSELF.