Bank Employee Accuses Me Of Faking A Check. He Regretted It When I Said This

It happened after lunch at my neighborhood bank, right at the teller window. I leaned on the counter, gray hair tucked back, and heard him say my check was fake. I told him to cash it—once, twice, ten times—and he just smirked. So I asked for his manager and said, 'Cash it now, or you've got a problem.' They doubled down, so I said, 'Fine—call the CEO.' He did, and as the line went quiet, my phone buzzed. The name on the screen made my stomach drop; everyone leaned in as I answered on speaker.