RCS Loans

I used to have a loan with RCS which I settled. They then went and deducted the debit order from my account though the account has been settled. To be able to get my refund I had to send proof of banking details as well as my ID copy to their refunds department and wait 14 working days. I sent my email on 03 August 2022. Till today I still have no refund and keep getting stories upon stories with every email and call I make. No definite date of when I am going to receive my refund. Until which day must I wait for RCS to refund my money as internally they clearly don’t know what’s happening and ****es a person off as they give different stories every time. What’s depressing is that theirs no reference numbers for their calls and the email references leads to no results. How many more times must I call to get my money which they admit is their. Does the bank they use only cater for receiving money and doesn’t cater for refunding what’s not yours.