Hi

All 4 of my intra-south america flights on LA have now converted to all economy. 2 changed before I ticketed and the other 2 after ticketing. I'm on a business class fare (DONE4 if it matters). There are no alternative flights I can take (same or other routing).

Is there anything I can do? It doesn't seem right that an airline can just downgrade the service to economy without recognising in some way that I paid for business class (on the 2 flights that changed after ticketing).