Company called me and said that I owed them money, they stated that they were calling on behalf of the ambulance company that I had used in october when I had an accident, and that I owed them money and needed to pay it, I gave them my CC number without thinking, then I called the hospital and the ambulance company and they said that I did not have a balance, I called the CC card company and the money has not been taken out, so now I do not know what to do.