Just called me and left no message. Upon calling he number it goes directly to voicemail which isn't set up.

Calledeft no message called back went straight to voicemail not set up

Spam telemarketer for Smile Brite Dental Plan....  Calling numbers on National Do Not Call Register...

Please Report Smile Brite to FCC for violation of the Do Not Call Act

You will have to report them yourself.  This is a forum to help people identify unknown callers and why they are calling, not a reporting service.  In any event, reports to the FCC, FTC or DNC all need the phone number called along with the date and time of the call. Only you have that information.  Since you found this site, you should be able to find the FCC, FTC or DNC sites to file your own complaints.

Had missed call. Upon return , it went to voicemail.