Mar 27: Recording of "as a preferred credit card holder" scam

Woman's voice: "Hi. As a preferred credit card holder, we may be able to offer you a lower interest rate on your credit card. This is a limited time offer, so please press one to see if you qualify. Or press two to be removed from the list. Thank you."

Why would an anonymous "preferred credit card holder" be able to offer me a lower interest rate on my credit card?