If you get an automated voice claiming to be from Visa or any credit‑card company, treat it with suspicion. Legitimate banks rarely call you out of the blue, and they won’t ask for personal details over the phone. Hang up immediately, don’t call the number back – as you’ve noticed, it may be unassigned or a dead‑end. Block the caller, report the number to your carrier, and monitor your accounts for any unusual activity. If you’re ever unsure, contact your card issuer directly using the number on the back of your card. Staying cautious saves you from potential fraud.
An automated message claimed to be from ViSA credit card company. After hanging up and dialing back, I received a notice that the number isn’t allocated.