Final answer:
Lencho, the character in 'The Letter', called the post office workers 'a bunch of crooks' due to his mistaken belief that they took part of the money he had requested from God after a hailstorm destroyed his crops.
Step-by-step explanation:
In the short story 'The Letter' by Gregorio Lopez y Fuentes, the character Lencho refers to the people at the post office as 'a bunch of crooks'. This statement is a result of Lencho's belief that the individuals at the post office have taken some of the money that he was expecting to receive. The money, which Lencho thought was sent by God in response to his prayers for assistance after a hailstorm ruined his crops, was actually provided by the kind-hearted postmaster and his colleagues who were moved by Lencho's faith. Nonetheless, when the money he received was less than the amount he had asked for, Lencho's faith in humanity diminished, which is reflected in his harsh judgment of the post office workers.