@kleyton_sena
As per this link here the only payment methods available for Brazil are:
Visa, Mastercard, JCB, American Express, Visa Electron, Visa Delta
If you would still like to request a refund however you will need to call customer service. For security purposes account / billing related issues are only handled via phone.
Since you are in Brazil you can. Use the below information on how to call customer service.
dial 00 + XX* [Removed by CM]
Do not dial the plus signs displayed here!
*for Brazil the exit code 00 must be followed by a carrier code XX which can be: 14 (Brasil Telecom), 15 (Telefonica), 21 (Embratel), 23 (Intelig), 31 (Telemar).
If you have Skype or another VOIP app, you can try to use it to call instead which may allow you to call at a discounted or free rate.
The hours of operation for phone support is 9.00 CT - 21.00 CT (15.00 GMT - 3.00 GMT)