The integrity of GDE admission

I have app**** for grade 1 admission for my son in Morester laerskool (Springs), i received an sms that the school has reached its capacity. My son is currently doing grade R there, the school has given us forms to fill- if your child will be returning to their school in 2024, forms were submitted and returned to school for your child to be placed the department uses these criteria: 1. Home feeder zon , 2. siblings in the school, 3. current school. My son falls under these criteria's!. what id like to know is: thaout of all 120 pupils that were accepted do they fall under criteria 1 and 2. why was a learner that is currently studying in that particular school and app**** were not prioritised. I've called the principal , she brushed me off by saying the matter lies with department of education, when i call the district office i was told that there is nothing they can do if the school has reached its capacity. kindly help