If She/he denies the extension of your visa, you should have a banking account in Brazil so as to receive a refund. For anyone who is crossing a land border and intend to return to Brazil (e.g. after a working day vacation to Paraguay or Argentina), the last amount on https://build-mind.com/userinfo.php?com=profile&user=josefa_rolph_451692&mod=space&name=Your_Account