when going through the voice mail service I found that this company claims to be called metro public adjustment.

215-633-9877 keeps calling me and when I answer I echo and they continuously hang up, when I try to call the number back it takes me straight to a voicemail that says General Voicemail.

I fished around their PBX and found that they are indeed Metro Public Adjustment.
http://www.metropa.com/
Harmless stuff but their PBX admin should change their password from something less easily guessed/ ;o)