I tweeted Elon on the chance he might want to do a good deed.
ElonTesla is sufficiently disorganized that they have messed up on very serious things. You are unfortunately right that taking them to court may be the only way to get them to *notice* how messed up their internal processes are. Be assured that they intend to do the right thing, but you still may have to file a lawsuit to get them to do it just because of sheer chaotic disorganization.
I have found that Tesla is more efficient at issuing refunds by paper check, so maybe you should just get that done.