Don't be so sure about that:

https://www.forbes.com/sites/alexandralevine/2022/02/24/suic...

You can't anonymize your phone number which is all a data broker needs to connect to your identity.

Callers need to exercise a fairly high level OPSEC to maintain anonymity. If you aren’t using some VOIP service, there’s a good chance your call will be traced and the cops will be at your door anyway.