Block the number right away if you suspect a scam call. Check your Do‑Not‑Call registry to confirm the line is listed, and consider adding the number if it isn’t already. Never share personal or financial details with unsolicited callers, especially those claiming to lower credit‑card rates or offer rewards. If the caller asks for a callback or tries to involve a third party, hang up and verify any claims through official channels. Use call‑blocking apps or carrier services to filter future attempts, and report the incident to the FTC or your state consumer protection office. Stay vigilant and keep a log of suspicious interactions.