Who called from 8149201685

Continuous calls, and unable to reach representative.

I received an unidentified call from 814 920-1685 that I did not pick up.
When the answering machine message came on, the phone line went 'dead.'
Since I was sitting by the phone and there is a wireless receiver with the base, I looked at the number for the last call that came in and found that it was different from the phone number recited by the phone system.  The 814 number was on the caller id, but the number shown on the wireless handset was 800 455-8103, also not identified.  
When I searched the 800#, there was not 'history' reported.

Received a call but did not pick up. No message left.

Received a call but did not pick up. No message left.

i receive these calls but I feel like it phone tapping, you know the government listen in on phone calls now,