If your pharmacy is like mine, when my last script of Clonazepam (Klonopin) ran out, they filled another full bottle on good faith that I've filled that prescription time and time again there, but even then, they can pull my records at any store in their 'network' to see my medication history.

I hope you've been able to get a refill, or at least a small supply. As others have said, not something you want to just stop taking.