telling you that there is nothing wrong with your credit card BUT.....
to sum it up:
they want to get your credit card number and offer you a "better" credit card. just crap
I was robocalled; when I answered it thinking my daughter was calling from a friend's phone, it put me into a bank of telemarketers. The reception of his mic was great; I could hear over a dozen other voices selling everything from insurance to solar panels. If it comes up, don't answer. I've blocked it now.
About lowering credit card interest rate.