SIM switching messages on iPhone 14 ProMax with dual SIMs

I have a work number and personal number in my dual sim USA 14 Pro Max. It will randomly switch sims mid conversation and will place calls on both sims randomly. Yes, I double check which SIM the contact is set to every single time.

This is privacy issue. It has exposed my personal number to work clients and they have used it to contact me outside of work hours and find me on social media.

I will set a contact to BUSINESS and send a text that goes through as PERSONAL. Switching back to business only works 50% of the time. I have to manually go in and deactivate my personal sim under networks every time I send a text

[Re-Titled by Moderator]