Credit card theft. Robo caller left a message using computer voice to pretend they are San Diego County Credit Union (SDCCU) fraud prevention and that they prevented an illegal charge to my credit card. Except I've never had a SDCCU credit card and have never done any business with SDCCU. Surely if you also receive this call and you call them back because you have a SDCCU credit card, the scammers will try to "verify" your information by asking you for it. In other words, they collect everything they need to charge your credit card, and then you really will have fraudulent charges billed to your card. Instead call the number on the back of your credit card if you want to verify potential issues, never call back the phone number that initiated the call to you.