In the last week, I have recieved a dozen calls from this number. They don't leave a message and the call immediately disconnected the first couple times I picked up to see who it was.

Keeps calling! only thing I can think of is a job application

Called the number back and got the message.."you have reached a Non-Working number". Phone bank or computer callers If I had to guess. Got My number off an online Job application I'm sure.