I had a flight cancel in February, and got confirmation that a refund would be processed in late March. I'm still waiting, and get no information from Lufthansa when I email or call. I'm now trying a dispute / chargeback (which the Chase call center rep doesn't seem to understand) - but Chase tells me it's too late for that. Has anyone had experience of this? Am I stuck now, waiting for Lufthansa to refund my (expensive) ticket? Thanks!