Never respond to any cold call that asks for information.
I got a phone call claiming to be from my credit card company a few days ago. They said they were calling from the fraud division and the first thing they asked for was my social security number to confirm who I am. I told them I appreciate the call but that I'm going to call their fraud division myself to make sure it's legitimate.
I did and found out it was a legitimate call, but there was no way I'm giving my SSN to someone who calls me up and asks for it because of some suspicious activity on my credit card. Odds are that they're calling about some FUTURE suspicious activity.
