...
6.2. Receiving the refund confirmation
You need to login to the PagBrasil Dashboard and specify the URL you want PagBrasil to notify you when the refund is processed.
...
customer_bank = Customer's bank number (número do banco). Please find the bank numbers here (column "COD COMPENSAÇÃONúmero Código").
customer_branch = Branch number (agência).
customer_account = Account number (conta corrente). Must include the hyphen and the verification digit; for example: "12345-6".
...