Capitec deducting money without our permission from my sister s private account

I am back again here because of Capitec,my sister is a student with no income but u guys don't have a heart,her account since Wednesday money coming out without her permission and by you Capitec,that was money for school,I would never recommend u to anyone,worse part the money is being deducted from her private savings account,no man,m ****ed of actually,will share this information on all social medias,more than R510, your not professional,worst bank ever man