No message left, caller ID listed Freeiom One and this # 240-210-7103,
would like to know who this is or what company and what type of business.

Never leaves a message, caller ID listed PARC and this # 240-210-7103. Who are they and why do they keep calling?

THEY CONSTANTLY CALL AND LEAVE NO MESSAGE,ONCE I ANSWERED AND THERE IS A OPEN LINE AND NO ONE SPEAKS

Answered call and listened to silent open line for over 20 seconds (they did not disconnect) before I hung up.