Incorrect debit order amount

I had a tracer come to my work place to sign forms.one account was not there. So the amount for the two accounts were agreed upon.but the 3rd account was not cause I didn't have it with the tracer.now they have debited full amount for the 3rd account. When I called them they said the 3rd account is handed over to lawyer so I asked why has African bank debited my account n I have not heard from their lawyers. But they can't answer me. I need the money reversed back as it was sent to my account for school fees now I'm stuck.i called their call centre and up to now have not heard from them