Banorte, Santander and Citibanamex are the banks with the most complaints, reveals Condusef Posted byEntrepreneur en Español March 30, 2021 Leave a comment on Banorte, Santander and Citibanamex are the banks with the most complaints, reveals Condusef The three institutions account for almost 50% of all complaints against banks. 33% of the claims are for charges not recognized via the internet.