This # called me, I immediately do a google search and got me to this site, so I answered and said "FBI office this is David your call being recorded and tracked, can I help you" LOL they hung up and probably will never call again.
http://www.lawslookup.com
Have you registered your number at the national do not call registry
https://www.donotcall.gov/register/reg.aspx?panel=3 ?
If you have, then you can file a formal complaint at
https://complaints.donotcall.gov/complaint/complaintcheck.aspx