From Lawrence Finch posts:
"You don't block contacts, you block numbers."
"So instead block the numbers. I suspect blocking a contact only blocks the first number."
Actually, that's not correct. The concept---when working properly---is that you're blocking a Caller, regardless of which number they're dialing from or how many numbers they own.
If you go to Settings > Phone > Blocked, you'll see what I mean. If using your method, Lawrence, you'll see a list of phone numbers. When using the method jkfrench and I do (saving the offending numbers to a common "telemarketer" contact card), you'll see those entries listed by name.
Ex:
• I have a contact named A: JUNK CALLS (the A: prefix pins it to the top of my Contacts list)
• This contact has 17 unique phone numbers associated with it
When scrolling through Settings > Phone > Blocked, I see "A: JUNK CALLS" listed 17 times---once for each number associated with that name.
Like jkfrench, I wondered if there was a limit to how many numbers could be associated with a single contact name before blocking failed to work. Well...I created a second list (A: JUNK CALLS b), added a couple of numbers to that as they came in, but alas...still didn't work. The phone rings, their Contacts name appears on the screen, but no block triggers.
Very frustrating.