Who called from 3129291870

I received two to three calls from this number a week for the last couple weeks. This is a work number. They only ever hang up.

Calling about a contest. They have called multiple times

Have gotten calls from this number for the past 2 weeks, they always hang up.

Do not believe this explanation -- just received a call today and when I answered they hung up. I have a high credit score and a perfect rating with NO debts (past or present) even late, let along in collection. That is NOT the source of this call, unless of course they have the wrong person. I have had my phone number for years and it is a cell.