Why is the person calling me and not leaving a message. We don't know this number

Called my phone at 8:52pm Central. Left no message. Shows up from IA.

Fraudulant Caller making idle threats!

I keep getting calls from these people and have reported them one already. They called MY WORK on Friday and I told them to stop calling me and that this is a scam. The caller them exclaimed, after I got very angry with him, "Prepare to lose your job". These people are a mennace and need to be stopped.

Hangup when I answer...when I try calling back, says number isn't working.

I know his name is Robert, he sells insurance for 20 different companies, and he is similar to a scum sucking pig. Calling random cell phone numbers. There should be a law against this. To protect people's privacy from blood suckers who have no decency. Send a message. DON'T DO BUSINESS WITH THIS MORON.

Automated message calls placed at least weekly to my cell phone during business hours. ENOUGH!

Recieved call today at 3 p.m. stated that I had been selected to receive 100,000 airmiles to press 1. Didn't press 1 but did contact airmiles and the Nation Do Not Call list.