Calls many times a day, leaves no message and unable to call the number

Received a call from this number today. No voicemail left and not able to return the call

This number called me a few times, they left no message, and I too was unable to call them back. It frustrated me because I am currently looking for a new job and was unsure if it was an employer trying to contact me or not. All I could find out for free is that the number owner is in Auburn Hills, MI and has a Verizon Business Landline.