I worked at delta like years back. First off, you can’t polish a turd. So if it was in that bad of shape tough shit. Secondly, there is a good chance they will do something about it. Just be polite and very professional about your complaints rather than being a raving lunatic and I’ll almost guarentee you they will do something cool for you. Be sure to be very polite and ask to speak to the manager (or whatever higher being may be there) and continue to be super nice to that person when expressing your concern.