We have a number for when someone is using google.ca and a number for when people go to our site directly or from another unknown source.
When someone is on google.ca and is looking at the google my business page, if they click "website" on the google my business side pane page, the website will serve the direct number, not the google.ca number.
Please look into this.
So the way that you Dynamic Number Insertion is set up, the number will be automatically changed if the referring source is google. When I went to your website through Google My Business on the side of the google search, the number was able to be changed. If you continue to have a problem, call our customer service at 855-889-3939