i did not get what I paid for

The headmaster threaten me after I went to her to find out why I am not getting my daughters graduation photos and final report that I paid for. Even on the day of the graduation she gave me bad attitude, she didn't want to give my daughter the hired gown that I also paid for. instead I did not pay R300 for food because I brought my own like most parents, she said it is compulsary for me to pay for that food so she took the gown money towards the food that I didn't even get to eat because it wasn't enough for everyone. So I updated my whatsapp status in frastration to \don't take your child to little flowers