Login to your My T-Mobile account http://www.t-mobile.com/
Click on "Billing" on the top of the screen
Click "Billing highlights"
Next click on "Easypay" in the bottom left corner
Fill out the credit/debit information
Click "Continue" then review your credit card information
Click "Submit" to complete Easypay
Were you able to find the answer to your question? If not, here are the best ways to get in touch with a rep at T-Mobile: call T-Mobile here