CONTINUING DEBIT OF SETTLED MOTOR FINANCE ACCOUNT

My MFC motor finance account was settled by my insurer on 2 November 2015 and proof of payment was sent to MFC. Despite this MFC debited my bank account on 30 November 2015 and following my e-mails to their consultant Masentle, I was assured that the money would be refunded to me and that the account would be closed. On 31st December 2015 I have now again be debited by MFC indicating that they have not closed the settled account and no refund was ever received. My further e-mails to Masentle and later copied in to another consultant Colin, have been ignored and I get no response from them.