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.