Hey guys! I'm new in the forum, I've read the cases of the Iberia 1K flight business flights in here. My ticket was issued in June, and now I got the email that they downgraded me and they're not willing to re-issue back in Business. Only refund or flight in economy cabin. I have a flight after that one, so I can't really cancel it. How should I proceed to make a complain in Spain? AESA? OCU? I don't know how to fill a complain as they are not willing to do anything claiming it was a fare error in the website. (Which we shouldn't be responsible at all). I've called several times, stating I have the e-ticket and several email confirmations but they are really stubborn. What do you think? Thanks!