So little has been written on what happens after hyper-inflation that it is difficult to know how VZ can get out of this. Their interest rates are currently in the 55-60%.

But basically
1.) It is no longer a functioning currency. Was has been written about inflation applies to actual currency.
2) 55-60% interest may not do the trick. A quick search reveals these as purportedly their most recent inflation rates. (To bring down high inflation interest must be > inflation.)