I'm tired of getting spam calls and texts. I want the ability to give each business or individual a unique number with unique rules for when and how that number can be contacted. If I never want to be contacted again, I just remove the virtual number.

I'm aware of services like Twilio or Google Voice that allow me to do number forwarding... but it's pretty cumbersome to set up at scale (and I believe Google Voice is limited to 1 number).

Beyond the general privacy focus and reducing spam, it seems like this could have good use cases for public figures, people with stalkers, dealing with your ex, etc.

Does a service like this exist? If not, what are the technological complications preventing this from existing?