Scammers. They will attempt to "verify" your credit card info, which of course means they want you to GIVE them your info. These idiots are coming out of the woodwork, and the Do Not Call Registry means nothing to them because they're not legitimate telemarketers. Ignore, then block.
Recorded call from "Sara" at Credit Services. Nothing wrong...... (exact same recording, just from a new number. THIS IS A SCAM! Do not push to talk to operator.