a question what will appear on the account statement? which data from the user?
when somebody pay via bankwire, then get your bank account information, which you set on plugin settings page (you get email information with link to accept payment)
then user manually send money to your bank account, if user send money to your bank account, then you click on link which you get on e-mail and payment is accepted, and user get membership or something else.
if user dont pay manually to your bank account then you ignore this email