THEY CALL AND HANG UP

THEY CALL AND ASK IF THEY CAN SPEAK TO RALPH LONG AND I ASK THEM JR. OR SR. AND THEY HANG UP EVERYTIME!!!! THEY CALL EVERYDAY AND THE SAME THING. IT SAYS ON THE CALLER I.D. FIN SERV AND THE NUMBER IS 1-402-982-0486 AND WHEN I TRY TO CALL IT BACK IT DOESN'T RING OR ANYTHING..PLEASE HELP!!!