Hello colincreado,
If you are getting a reject from Revenu Québec regarding an invalid telephone number, please follow the steps below:
Go to your spouse's "Interview" section.
On the "Spouse Identification" page, answer "Yes but different phone number" to the question “Do you have the same address as your spouse?”
Click "Next" at the bottom of the page.
Enter your phone number in the "At home" field. Leave the other fields blank.
Then try to submit your tax return again.