Law / Student Visa Question: National or Schengen for American student? [9]

Hi all, I have been waiting for my visa appointment since 2 months and still showing dates not available.
My course starts in october . Now im worrying as I dont understand why they are not giving dates. Can anybody suggest what should I do.

Law / Student Visa Question: National or Schengen for American student? [9]

@DominicB
Ok I wont do that. Just one thing when I try to book the appointment it shows ...' No deadlines until 29/09/2017 ' . Can you tell me what does it mean?

Law / Student Visa Question: National or Schengen for American student? [9]

@DominicB
Ok dom ...will keep checking

Thanks Jon .....will keep trying for sure