Those emails are automated. They're causing the DS to receive a lot of email regarding them and some of the DS have replies to them sent straight to trash. Applying for financing less than 30 days before delivery is useless unless you think you may not qualify, since you will have to apply for financing again within 30 days of delivery.
In my opinion, I don't think you'll take delivery in September. However, there is a chance you may still get the 0.99% since people on the forums have said they have heard the promotion will be extended after September -- no one knows for certain right now.