Unauthorised debit

I'm very angry with clientele.I sent R160 to my daughter's bank account to buy a new jersey.Mind you, she is 18 years old and still in high school doing matric.Few hours later the money gone and was debited by clientele.We tried to contact Capitec for assistance and they said unfortunately their hands a tied because my daughter signed a mandate so the policy cannot be stopped from deducting.I mean who the hell can let a school still at school join a policy , how is she gonna pay monthly?I am very angry right now.When we called them they said they are going to cancel the policy but they wont refund my daughter.I thin clientele is a ****.