DO NOT ANSWER PHONE....DO NOT CALL BACK....THEY DON'T CARE..
THEY ARE FISHING FOR VIABLE PHONE NUMBERS AND WHEN YOU ANSWER THAT JUST VERIFIES YOU OWN THE PHONE......DON'T PRESS "1". Either . That lets them get more info....they then sell your number to other companies and you wind up getting more calls. It's annoying for sure but just let it ring, after awhile calls will decrease....I only get maybe 3 a week. Now...just steel yourself, don't answer, check your caller ID. Most of the time they are robocalls....why do you think most don't speak.....they just want viable numbers which you give them when you answer or call back.
My caller id read San Francisco/North Bay area, CA for this one. I recently cut my landline and have an internet telephone system. It works great, and the best part is that I can create a blacklist online so that all of these guys call me only once. I don't answer, just put their numbers in my RAPIDLY GROWING personal never call me again list--got this done just in time for the political season to start heating up!