Can't think of an airline I'd be less surprised to hear this about.

Vietnam Airlines once somehow managed to email me the boarding pass of another person due to fly with them the following day. I'd provided an email address to their sales agent when booking a flight on a different route some nine years earlier (back in the good old days of 2009 when they didn't have newfangled stuff like online booking), and didn't even have a remotely similar name to the individual whose boarding pass they'd sent me. I hope they didn't miss their flight! (yes, I emailed back, copying in some customer service addresses that definitely weren't no-reply...)

I'm not an expert in airline PSS systems, but I know one thing - that isn't supposed to happen :)