If you no longer want your international add-on, you can remove it by following these simple steps:
1. Sign in to MyMobile
2. Click My lines
3. Select the line where you would like to remove the add-on
4. Click My add-ons
5. Click Manage international
6. Slide off your international add-on
7. Confirm that you would like to remove this add-on
The add-on will be removed from your account at the end of your billing cycle.