The voice of my custom GPT sounds extremely moody. How can I have Juniper? No cap

Just chimed in to say this murderous female voice called “shimmer” hijacking my custom GPTs is not cool, or okay. If you can make an upbeat Juniper voice that is happy and helpful, why make all custom GPTs have a tonality that invites a fight? (if you don’t already know, just look up a sample of this HORRIFIC “shimmer” voice which overrides the default voice settings on custom GPTs. If you spoke to people, the way “shimmer” talks to me, you’d get slapped, 100%. Let me use Juniper for my custom GPTS! Or els I’ll cancel my subscription again. The problem here is that the disgusting tone of “shimmer’s” moody voice, will overshadow, and even negate, any value created by my custom gpt. Thank you and have a good night.