NHTSA Complaint #11533647 — 2009 HYUNDAI SONATA

I see that the manufacturer has an "Open Service Campaign" on their Sonata's shark fins. I've taken mine to the local dealership and they want a min. $700 to replace the shark fin. It just came off somewhere (a couple of years ago) and, now, my car has to be jumped off if I let it sit more than two days. I have had it inspected by the dealer and an individual garage. No one would tell me what was draining my battery. I am a senior citizen and fear I will get stranded on the road somewhere. The missing fin lets water into my car, soaking the carpets, etc. Finally, it was suggested that the car cover I keep on it touches the exposed fin components and that's what was draining my battery. It seems that the manufacturer was aware enough of this faulty part to want to prevent complaints by voluntarily replacing problematic parts (thus the service campaign). And, there are a lot of videos on YouTube from DIY folks who've suffered through replacing the shark fins (many different models) themselves. It seems, however, the manufacturer only notified dealers with said "open service campaign," not the public, as in a proper Recall process. That way, they get to make more money off the public when the part falls off? Please advise how one might get the dealers to do the right thing. Thank you.