Well when you search in Canada 411 it completes the search in Yellow
Pages, so maybe that's why it cites American ones? XD I'm not claiming
to be an expert here by any means.There are a lot of websites though
that regularly generate false phone numbe...
Do you know if they have registered for the "Do Not Call" list? It might
be filtering out your number and they may have to file a complaint or
deregister to make your number an exception.This is the link for them to
file a complaint with the Natioina...
I'm not sure what kind of SIM you have, but it might be an easy fix if
it's just dirty?You can use an eraser or cotton swab to remove dirt and
dust. Microfiber cloths also work well.
https://www.wikihow.com/Clean-a-SIM-Card