Who called from 6204124993

I did today. 2 sec VM. When I attempted to call back, 1 ring and then "Goodbye".

This number calls numerous times a day, no vm, when I try to call the number back, no answer!
STOP calling

Foreign voice wanting to giving home improvement loan and before that was a car warranty. Probably a masked number.

Called several times, then put me on hold for an important message. I hung up.

Called twice so far today and did not leave message.