Unhappy client

On the 15 September 2025 I gave a mandate to we Clear Debt for debit review I was assisted by a lady called Chaniel, when she presented I was very interested because I thought they were better than the other company I was unhappy with,so the mandate was supposed to go off on the 26 October 2025 but to my surprise it went off on the 26 September 2025 and on that I alerted them that there is a mistake happened the debit order was supposed to go off the next month not this,they said they will come back to me on that Friday (26.09.2025) but they never come back to me,the following day I went to my bank to reverse it and I was told a bank can't do the reverse I must speak to them as they are the only one who can reverse my money, on Monday the 29 September 2025 I called them again and they said they are still waiting for the recordings and they will come back to me again. Today(1 October 2025) I was told that they already distributed the money to the shops I can't get my money back the only thing that they can do they can freeze the debit order for next month which is October then start again in November, I told them I don't want it like that I want my money back and I'm canceling my service with them because the broke my trust.How can I get my money back because I was not helped at all.There is no way you can sign up a mandate on the 15 September 2025 and start on the same month they were supposed to wait and they got the recordings and was confirmed that I asked the lady that is this debit order go off at the end of October 2025 and the lady said yes it will so I feel I was mislead now they don't want to reverse my money back yo my account.