***** people sending ***** debit order

I am not even discovery customer i haven’t taken anything from them yet still they sent a debit order to my account! For 1469 rands and 150 rands ,, guys have some shame i am foreign national that to a student in your country don’t u guys have little bit shame left ?? Like even a drop of shame ?? How can u put a debit order without my consent?? Why ?? Please i need answers or i am going to sue u in court of law