1 Thank you for warning us.
2 Please query this with Transferwise.
(i) The Transferwise side of it is promoted as being fully transparent, which it has been in my experience.
(ii) Then the whole idea of it is the payment to the receiving bank is a domestic transfer in local currency, so it should not attract anything more than domestic banking charges. I presume Transferwise should confirm if this was a domestic payment to the receiving bank.