'Dune: Part Three' ticket demand overwhelmed AMC's website. Its CEO called the glitches 'intolerable and inexcusable.’

AMC grappled with yet another online ticketing meltdown after a new batch of "Dune: Part Three" tickets went on sale. Erik McGregor/LightRocket via Getty Images Demand for "Dune: Part 3" tickets overwhelmed AMC's ticketing systems on Tuesday. AMC CEO Adam Aron said its IT department was instructed to "take whatever steps are needed." "We thought we were ready, but we weren't," Aron said on X. Some fans of the "Dune" franchise had to duke it out like Paul Atreides to snag tickets during AMC's…