Cancellation of a debit order and refund

One day I met this lady she told me about IFA and said it's free, I asked her repeatedly if they won't deduct any money from my bank account and she said no. Yesterday they took R420 on my bank account saying I have a debit order for clientele, I tried to reverse it using my app but no luck, I tried calling Capitec they said only clientele can help me...so I called clientele and still no luck, tried their WhatsApp number but still no luck... I am supposed to pay rent with that money before the 31 of this month or else I'll be on the street, I even wrote an email to them but still no one has called, I even went to their page and filled my details so that they can call me back...I need them to cancel this debit order and refund me my money this is my code AF839350