I had a company use my credit/debit card without my authorization, I paid my bill on the contract over the phone with my card and they asked if they c

I had a company use my credit/debit card without my authorization, I paid my bill on the contract over the phone with my card and they asked if they could keep the card on file so they could just take it out every two weeks I told them No! then 2 week later they used it anyway,I contacted them and they said it was an honest mistake, I asked how it could be an honest mistake when they should not even have card nu#,I have the email they sent me proving they used it, what can I do about this. Please advise. Patrick Anderso