Double Debit and Serious Issue With Account

Dear Finchoice

I am extremely disappointed at the lack of service and assistance. On friday 28 February 2020 finchoice and fonechoice debit order went off twice. I only reversed the one set. Since Monday I have been receiving phone calls and smses stating my accounts are in arreas. Even on finchoice mobi it shows my account is in arrears. I have sent throuhg my bank statement showing the transactions up until now it is still not sorted. This affects my records and credit score. Please can someone urgently assist me on this.