Hello @manhdung_165,
It's sad to see you want to cancel your Fido plan, I hope everything is okay on your end.
If you are trying to cut expenses until things get back to some sort of normal, you might want to consider a Temporary Suspension that way you keep your number and plan it can be done for 2-12 months and costs $7/month this option requires you to be off-contract.
If you would like to do the suspension or just cancel you can contact customer service and they can do it for you.
You can reach out to customer service through any of the available methods listed here.
