It might happen that you provide the wrong bank account number. Needless to say, we do everything to avoid that; therefore, we, amongst others, check the format of the bank account number. If the bank transfer is not executed for any reason, the transfer will be unsuccessful, and we get back the money. In such a case we credit the transferred amount, reduced with the transfer fee, to your wallet when it comes back. If you do not know why a withdrawal has been unsuccessful, please contact us and send us the data of the transaction requiring investigation so that we can check it.