Said caller was from American Builders in Los Angeles, CA.
He wouldn't give me an address, the person I spoke with called himself Jack Jackson, and said he didn't know the address. When I said to ask for it from a co-worker or just connect me to the manger - I was disconnected.
When I called the number right afterwards a woman who said she was a manager said they were a company called Gold Star. Wouldn't give me  an address either before hanging up on me. Second time I called, which was 10 minutes later the same day, a machine which answered said the company was Magic Jack.
This American Builders calls me at least twice a month even though I tell them to put me on the Do Not Call List.... I've tried to get any information I can to report to the better business bureau, but they hang up on me when I start questioning them.
Please advise how to find the information needed to get them to stop calling me.

Given an address of 155 W. Washington #1201, Los Angeles, CA 90015 or 90012

BEWARE>>>THIS IS A CHARLATAN CALLING FROM AN ILLEGAL BOILER ROOM^^^^^^^they will say they are from a home improvement company and want to get out to your house for a FREE ESTIMATE on home repair, they then take inventory on what they can come back and steal when you are gone...BEWARE!!!!!!!!

Caller claimed to have spoken to me a month ago about setting up a future (today) appointment to bid on a patio repair.  I had no recollection of such a call but  in fact have three legitimate bids for such work and am about to sign a contract.  Got sweet talked into setting up appointment today 5/4/15.  Then tried to find company name G. M. Construction but could not find a match.  Then did this phone number look up!!!!.  Thank you.  Looking forward to telling "estimator" that I am unable to do business with him!!