An automated voice called me telling me that I could lower my credit card interest rates, and asked me to press 1 to talk to a rep. I did so, and here's how the call went:
Rep: Customer Service
Me: Hi?
Rep: Do you want to lower your credit card interest rate?
Me: Sorry, what's your name?
Rep: ...Polly
Me: Okay, what did you want from me?
Rep: *hang up*

I tried calling the number back and it's apparently been disconnected. Clearly a scam.