Who called from 4068133003

I didnt answer the phone but random numbers keep calling me. this one was one of them

I keep getting the same call with no one on the other line.  I hung up and called the number, I got a message from verizon wireless, saying the number has been changed, disconnected or is no longer in service.  This was seconds after I hung up.

They keep calling with no one on the line.

Would appreciate 406-813-3003  &  406-686-3558  Not calling my pre-paid calling card Tracfone.

I too just received a call from this number but did not answer and have yet to get a voicemail. I figure if it's important they will leave me a message.