Adding a payment method is required when upgrading a Twilio project, but this can be deleted at any time. You can have multiple payment methods stored on your account, consisting of both credit cards and Paypal accounts.
- Login to your Twilio project at www.twilio.com/console.
- From the Console Dashboard, click Billing.
- Under Billing, click Payment Methods.
- Click the DETAILS link next to the desired payment method.
- Click Delete this payment method.
- A confirmation window will be displayed. Click Yes to continue.