This number claims to be blue cross blue shield wanting to update information

Caller claimed to be Blue Cross Blue Shield rep and needed to verify info. Foreign accent. I know BCBS does not call to verify info over the phone but slipped. Since that call I've had about 100 calls from other people who have left messages saying I called them, or "I don't know you, stop calling." I get the feeling that if I answer then somehow the other person and/or myself will be charged an exorbitant fee that will be attached to my number only I won't be reaping the benefits!

number is being spoofed and they are using it to call other people.