Hey @
Bango is a service that charges to your in-voice when you make in-app purchases on your phone (for things such as games) and bill them to your online account. Do you recall buying anything?
For more info on the charge, we suggest contacting Bango directly. You can visit https://bango.com/contact and fill out the form they provide under the "Purchased Content" section and they'll get back to you.
