WiFi Calling To Ring On Phone Or Not To

I have the Xs, I've NOTHING but problems caused by no ring notifications showing up anywhere on ANY device. The iPxxx devices will ring sometimes but not all, from those Wifi calls, but the phone doesn't show that in recent (missed of course) calls.

After having every version of iPhone since '3' - the Xs is bar-none the worst. I'm getting ready to toss it out. (There still seems to be issues that should've been worked out long before today.)

(Scenario) In chair with MacBook opened replying to mail. My iPhone didn't ring but I heard the marimba ring in the distance, thought the sound was from background/tv. (I knew the caller tried to call after receiving a text.) Immediately confirmed she did indeed call me. No list of that in 'recents' no indication of missed call on EITHER device.

This is not a one-time issue. MANY, MANY occasions. There are many other issues not up to par with apple-programming-quality as in the past. But I REALLY need to be able to receive phone calls on my $1200 phone.

Wifi Calling is _off_. But, Calls on other devices will not shut off under any circumstance on the phone. (Yes, toggled a bunch of times, on/off, devices/no-devices, it will not toggle to _off_.

Yes, latest iOS, rebooted, power-cycled.