[vkou]

The best advice for dealing with this kind of fraud is knowing that there are exactly three things that can happen in a conversation with the fraud department.

1. "Did you make these purchases?"

2. "Yes" -> "Thanks, bye."

3. "No" -> "Thanks, we're disabling your card, and sending a new one to your address. If your address has changed, please pick it up at the branch."

Any deviation from this is a scammer posing as the fraud department. Any attempt to gather any information from you, besides 'Did you make these purchases?' is a scam.

They know who you are, if they didn't, they wouldn't be calling you.