CHARGED TWICE FOR PAST ORDER

My money was deducted from my account by Mr D food around 3am i sent email to them they told me that the money was for the past order that i ordered on 29 November but i have the statement on my bank that shows the money coming off and i don't know how the payment was not authorized because wheh you order you pay sametime restaurant doesn't process the order without payin i need my money and i won't be ordering again with Mr D food