we used to get those calls on our cell phone regarding our credit cards, they would ask what our account number is, told them you are calling me; you should know my account number. Then they started asking more questions; told em the same: you are calling me you should know. I hung up on them - then I received a call shortly after from a person stating they were a supervisor for my card; okay which card- they couldn't tell me- SO I screamed in their ear- FRAUD,I am reporting this number immediately. (well I was driving and couldn't do it immediately..LOL I have bluetooth capability). When I got home- hubby said the same so we called the credit card companies and they said this was a fraud and did I still have the numbers-yeppers and gave it to the company-haven't heard a peep from the company or the frauders.
So maybe they were caught or moved on!