Who called from 7203168276

I sign up for rent to buy homes on this website, a lady from this number called me and pass me on to a man from Lexington Law (credit repair) who wanted my social, I was hesitate and hung the phone up.
His number was 1800-641-2930 Nathan Hook. Just need to know if these number/people are real.

This number has been calling every hour and never leaves a message today they have called me 7 times already caller Id says calling from Colorado