WONGA AND BLAKE - Not resolving their errors and causing me debt

I made a Wonga loan and paid a settlement amount on 24 October 2022 upfront as per the settlement letter sent by Wonga. Since then Wonga keeps on trying to deduct money from my bank account, from October to December, and want to try again on 14 December 2022. I have sent emails to Wonga and Wonga and Blake consistently, and nothing is resolved. Wonga now owe me a substantial amount of money in bank fees deducted for unsuccessful debit orders and a related bank charge every time. I have spoken to Wonga employees, Blake employees. Blake employees acknowledged receipt of my proof of payment and Wonga's settlement letter - all to no avail. NOTHING has been done to resolve this issue.