Who called from 4063719028

Caller ID showed 406-371-9028, listed as "out of area". Answered call, but just had dead air. Repeated "Hello" and I could hear my own voice "echo". Call could possibly be from overseas "outsourced" telemarketers who use "ghost numbers" to appear as a "local" call. After my third or fourth "Hello" (still echo heard), caller hung up. Information had no record of the number.

I'm getting this call a couple times a day.  I don't answer but it's very frustrating.  how does one stop this kind of thng

keeps calling and hanging up..no answer

I didn't answer but looked it up online and found
that it has been reported before. Now I know I won't
answer.

Same here, phone rings but no one there.  I won't be answering this anymore.