They claim to be from Discovery Card and offer a one‑time reduced rate, yet the recipient has never owned such a card. This pattern matches common scam tactics that rely on vague compliments and urgent offers. Verify any unsolicited credit‑card outreach by contacting the institution directly using a known phone number or website. Never provide personal or financial details to unknown callers, and consider adding the number to a call‑blocking list or using a spam‑filter app. Report persistent unwanted calls to the FCC and your phone carrier, and keep a log of call times and content for reference.