This number is a service provided by a large number of small to mid size local and regional banks. It is only a security/fraud protection on your credit or debit card.
+1 866-750-9107 | +1 8667509107 Phone Number Reports
(866) 750-9107 Phone Call Reports
Sounds a lot like Card Services. Woman told me there may be fraud on my account and that she could check if I just provided her my account info. Asked her who she works for and she replied "thousands of banks.". Total scam.
Will not leave message.