Although legally you could challenge this in the local courts you may find it difficult and costly to challenge the case in a Florida court.
They're off EASAs approved list of schools so they can't persuade to refund you. You will find it near impossible to challenge it in a UK court. Despite it being British owned it was a US company and not under UK or European law.
I'd love to think I'm wrong. But I'd start looking into or invoking Plan B as that money has most likely paid off creditors (larger ones than you) or will fund a lavish retirement for a certain individual.