Hello IBGbmac,
Thanks for connecting with Apple Support Communities.
You change change Siri's voice using the following steps. Please keep in mind that this feature is not available in all languages:
"Change the voice for Siri
You can change the Siri voice (not available for all languages).
- Go to Settings
> Siri & Search. - Tap Siri Voice, then choose a different variety or voice."
More details here: Change Siri settings on iPhone
To clarify, does this behavior occur while connected to cellular data, Wi-Fi or both? Also, have you previously experienced this behavior when trying to change Siri's voice? Having these details may allow us to determine how to best move forward. In the meantime, we'd like to provide you with a few steps that may be able to correct this issue with Siri:
- Restart your iPhone. This may seem like a simple step to take but can often resolve several issues.
2. Update your iPhone. Completing this step ensures that your device has the latest fixes. (Secure your data with a backup)
We look forward to your reply.
Best regards.