they calll all the time i dont even have deat

They are calling my 8 year old on his cell during school TWICE!
Can't something be done to stop this harrasment?

I got calls from 406-852-8355 and 406-351-4189 the last two days. How do I stop/block them from calling me? I tried to call back ,but the number wasn't a working number!

This number won't stop calling me. I even tried to talk to the human and when I asked them not to call me they hung up. Someone please stop these people!

I tried hitting the selection to be on the no call list and then one hour later they called again so this did not work. Then I tried waiting for the human to come on the line to tell them to put me on no call and they hung up on me. Please help us stop this phone number! They are harrassing me!!!!