Just another of the 1000's of fake "Lower your credit card interest rate" SCAMMERS. They can't even tell you who they are calling or what credit card you have. They are phishing for your personal information and credit card numbers.
I just got a call from 407-467-0181. It showed up on my Phone as Heritage Forest in Winter Park, FL. Since I don't know these folks I didn't answer and they didn't leave a message.