No high school assignment after 9th grade

Hello, I have a big problem. I just finished my third year and based on the three choices I made, I was assigned to my first choice, but I no longer want to go there because it's a boarding school and it's really expensive too. My two other choices were automatically rejected, but the problem is that the high school registrations were today, and since I wasn't assigned, I didn't enroll. We sent an email to the admissions office, but they must be overwhelmed.

I am very worried and afraid of not having a high school and I don't know what I am going to do. I'm scared I might have to repeat a year or something. If anyone knows more, it would help me. Thank you.