You'll never block all incoming scams, spams, etc.
Register your number on the Canadian National Do Not Call List (DNCL). And on the American Do Not Call Registry (DNCR) - because many call centers are outsourced by/for American companies. Yes, people are always quick to point out that criminals do not obey laws and even legit telemarketers/spammers/sales/etc have plenty of technically legal ways to circumvent things so these registries won't stop the worst spammers. But signing up also won't hurt and every spam call they stop is another spam call they stopped.
Telus (along with its Koodo Mobile and Public Mobile subsidiary brands) somehow never complied with the 2018 CRTC mandate to embed Universal Network-Level Call Blocking (UNCB) into their networks. Their official statement, when pressed, is that it's not necessary because subscribers have call-blocking features built into their phone softwares. What this means is that you're stuck blocking numbers yourself, Public Mobile (and the Telus network it uses) won't do it for you.
You will find that services like TrapCall do not function properly in Canada. Due to other CRTC mandates which were intended to protect the "privacy" of police officers, first responders, government offices, etc. This is basically an anti-consumer limitation so it's not one of the documents the CRTC advertises or makes openly available in public domain.
So as a Canadian consumer who subscribes to the Telus network ... you basically have to block the callers yourself. At least the reputable financial institutions realize that their customers' money is their money so they make proactive efforts to stop phishing attacks and other suspicious-looking activities, that's something.
