I called the number back but strange enough that it is a unreachable, discounted number.   Any how, I have block this number to prevent this spammer to use this fake number to reach me again.  Filed complaint.

Credit SCAMMERS on 801-224-8466! Claiming to be Credit Card Services and offering to lowering your credit rates or they are monitoring your Credit Card activity and so on, but actually these scammers phishing for your REAL CREDIT CARD numbers and your personal information! THIS IS SCAM