The feature you are describing - and that Verizon apparently implements - is known as Universal Network Call Blocking (UNCB). It is an imperfect technology - which requires the network operator constantly monitors and updates their blacklists - it will detect and block spoofed numbers which violate technical parameters, it won't ever detect and block every possible spammer (since most of these will actually use legit numbers anyhow). It's better than nothing and it's not as great as Verizon claims.
The CRTC mandated that all Canadian networks implement working UNCB before the end of Dec 2019.
https://crtc.gc.ca/eng/archive/2018/2018-484.htm
Rogers and Bell (along with their Fido, Chatr, Virgin, and Lucky subsidiaries) all proudly advertise this feature on their websites. Even the "small" networks (Freedom/Shaw, SaskTel, Ice Wireless, etc) have complied.
But Telus never complied. Their official statement (repeated by Public Mobile) is that they don't feel it's worthwhile because individual subscribers already have the ability to block numbers through built-in phone softwares.
I suspect that if you bug Public Mobile enough then they'll just repeat this statement again in some newly-worded way, but they've already decided (or been directed) to not implement UNCB so nothing will change.
Seems shady to me. Regulations (laws) which apply to all but one. No doubt somebody was bribed.
If you have an Android phone then you do have the option of installing different dialing/calling apps to replace the built-in software. iOS might have similar options, but I didn't see anything during a quick check through their app store. Some of these apps will still "remember" numbers which don't have a valid caller ID - they're "unknown", "private", "blocked", spoofed, whatever - so they can still be seen in call history and they can still be clicked on when you want to examine or block them.
TrueCaller is a popular choice, though I don't know if it supports this particular feature (and I suspect it doesn't).
Signal MMS is my preference, though I have a modded version I compiled myself, the consumer versions sometimes lack desired features.
https://www.truecaller.com/
https://signal.org/en/
https://github.com/signalapp/Signal-Android
You can also try using star codes, though I doubt they'll work for this purpose.
https://www.techjunkie.com/unblock-call-star-code/
You can also add your name and number to the Canadian DNCL and the American DNCR. Some people claim this is useless - and it is indeed useless vs spammers, criminals, and autodialers because they ignore laws anyhow - but less incoming garbage is less incoming garbage so it doesn't hurt.
https://lnnte-dncl.gc.ca/en
https://www.donotcall.gov/
The end-user counterparts of UNCB - things like TrapCall and unmaskable caller ID tracers - do not work in Canada. Because the CRTC prohibits consumers from accessing such powerful, useful things due to (one-way) "privacy" concerns. The Canadian government likes being able to call from anonymous numbers and will fight dirty to make sure you can't identify, trace, or block calls from the numbers they use.
https://www.trapcall.com/
https://www.iphoneincanada.ca/app-store/trapcall-caller-id-unmasker-forced-to-shut-down-in-canada-du...
