Voices are promotional, so there are for an amount of time, since waze it's free, and it always will, there is no way for you to pay for a voice, (official statement) right now, when a voice is gone it's hardly coming back
I totally agree, Waze should consider selling users' favorite voice packs as in-app purchases, once the free period has expired. I use Waze FOR the great voices, and it's so disappointing when one suddenly disappears!
Re: I miss a certain voice