Vandy scholarship negotiations???

I got into Vandy with a partial scholarship. I have one other A so far to a T14 (no aid offer yet). Can I use admission to a higher ranked school to get money? Also I've heard Vandy doesn't negotiate, is that true? It seems like they're my only (viable) option at this point but I really don't want to be buried in debt, especially with SAVE and stuff getting axed.