A bank customer has written in to complain about a change in payment dates at Banco Popular. The bank shortened the window in which customers can pay their bill in full. At the same time, it stretched out the deadline for paying only the minimum amount. In the reader's view, the new setup punishes customers who pay on time and in full. It favors the minimum-payment option instead, which is the one that generates interest. The letter's core complaint is that the change benefits the bank rather than the client.