CHICAGO — Even the Vicar of Christ can be thwarted by a customer service representative. About two months after Robert Francis Prevost, a Chicago-born cardinal, became Pope Leo XIV in Vatican City, he put in a call to his bank back home, a close friend, the Rev. Tom McCarthy, told a gathering of Catholics in Naperville, Illinois, last week. The new pope identified himself as Robert Prevost, saying that he wished to change the phone number and address that the bank had on file, McCarthy said. The pope dutifully answered the security questions correctly. Then, the woman on the line for the bank told him that it wasn’t enough — he would have to come to the branch in person. “He said, ‘Well, I’m not going to be able to do that,’ ” McCarthy said in a video clip shared on social media, recounting the new pope’s growing frustration as the audience laughed. “I gave you all the security questions.” The bank employee apologized. The pope tried a different tack.…