Withdrawing from Early Decision

I recently got into my dream school, but they said I didn’t qualify for financial aid. I was definitely expecting some kind of package, and the cost for the school is ridiculous, and I’m seriously thinking of trying to withdraw from my Early Decision agreement. There’s no way I can be in so much student debt. Has anyone here withdrawn from ED, and how did it go? I’m worried they won’t let me withdraw, or I’ll suffer consequences from it, but I genuinely cannot afford the four years there.