I’m not happy with Witbank Combined Christian School

I app**** for my kids in March, a week later I told them I won’t be bringing my kids anymore, but the school had already received school fees of R41000, i have been trying to email, call & WhatsApp them, they just blue tick me everytime. I’m tired now because i need the money to pay for my kids in another school. My question is why take the money when you knew the kids weren’t coming anymore