The net2phone Canada Billing Portal allows you to save multiple credit cards as payment methods. 

Delete a Saved Payment Method from the Auto-Pay Page 

All Billing Portal users can add and delete payment methods. Payment methods must be removed from the Billing Portal's Auto-Pay page, even if you have never enabled automatic payments on your account. 

1. Log in to the net2phone Billing Portal.
2. From the Account Dashboard, click either: 
   1. the Manage Auto Payments button in the Auto Pay Status tile, or,  
   2. the Add New button in the Auto-Payment Method section.
      
3. On the Auto Pay page, click the trashcan icon to delete the payment method. 
4. Confirm you want to delete the payment method.