Hey Elon, you can contact them via Facebook Messenger. They most likely will tell you to create a webform. While you get a Canadian phone number both approaches could help.When I call the number you mentioned, I get automated message that "The toll free number you have called is not available in your calling area".
Source: https://www.canada.ca/en/immigration-refugees-citizenship/news/social-media.html
You can message them and they do respond in a day-ish