I want my money as soon as possible

I had a Mr Price account which is closed and paid up in September that i was paying via ACS. Now this month they debit from my bank account. I called them a lady y the name Kastodi or something like that. She attended to my call she was so rude and impatient and she told me it was my fault that they debited my account I was responsible for them to stop the debit order. Yet I spoke to one of their agent after I paid the account they even sent me a paid up letter. I sent emails there has been no response and evertime I call this Kastodi is the one who answers. She td to reverse the money on my banking App or go to the bank. Which means i am going to lose some of my money. I told her debichecks cannot be reversed. I need .y R1000 back as it is. I have never dealt with so much unprofessionalism as I have with Kastodi. When they need your money they are available and friendly now that they owe me they cant even take responsibility for their actions