Answered question
How can I listen to my Voice mail, what number should I dial to activate this service?
You should be able to find your answer and more here
https://fizz.ca/en/solutions/search?keys=voicemail
You can click on each FAQ article to view it.
Other answers
Keep pressing 1 on your dialer for about 3-4 seconds and it should take you straight to your voicemail.
To manually access your voicemail, dial (1-514-647-0999)