Credit card information

Yes Fatemeh it will be easy to change for your own credit card.
Here are the steps to update a payment method, and associate it to your plans:
In your Fizz account, go to My Profile
Click on Payment methods.
Click on Add a new payment method to add your new payment method.
Then, select the payment method you no longer want to us, and click on Delete.
Now make your way to My plans.
For each of your plans, click on Manage plan/Payment method, and associate your new payment method.

Yelena here...https://fizz.ca/en/faq/how-do-i-update-my-payment-method-or-credit-card-information
How do I update my payment method or credit card information?
You will receive a notification and text or email when your credit card is about to expire. Click on the link in your notification to go directly to the update payment section in your account.
The update must take place 24 hours before the start of your plan’s next payment cycle to ensure your account is updated in time for your next payment. You must add a new credit card before removing the one currently associated to your account.
Here are the steps to update a payment method, and associate it to your plans:
In your Fizz account, go to My Profile
Click on Payment methods.
Click on Add a new payment method to add your new payment method.
Then, select the payment method you no longer want to us, and click on Delete.
Now make your way to My plans.
For each of your plans, click on Manage plan/Payment method, and associate your new payment method.
Know you must also associate each plan you want to pay with that new card. This is not done automatically.

For some people it's hard, but is it possible to change payment method at a later time.
If you have any problem doing so, you can contact us again