Bad customer service

I app**** for a loan on the 16th of June 2021, but unfortunately my application was declined by finchoice, then the following day, when I opened my banking app, I saw an active debit order mandate of R1600 from finchoice, I then called their customer service and I spoke to a very rude lady, I even forgot her name. She told me that Finchoice will not debit money from my account because I didn't receive money from them and my application was rejected, when I asked her about the active debit order mandate on my account, she said that will disappear or must go and speak to my bank, when I went to Capitec bank, I was told there's nothing they can do because the debit order is approved