MFC useless at their job

I have settled my debt on my car on the 19th of February 2021 and have emailed all the proof to the requested email address. I did a follow up call and was requested to resend the documentation which I did and I have requested on both times that they must please ensure that my debit order gets stopped. On the 1st March the debit order reduced and not stopped I enquired and was promised the money will be refunded in 7 days. I called again 11 March as the money is still not reflecting and was advised a team leader would call me and nothing to date. Quick to take money but not to refund#thifs#terribleservice