I received a call from XXXX XXXX of XXXX. They left a voicemail on my phone as well as my ex wife. 

" I have official documents being delivered to XXXX XXXX XXXX XXXX ... Sine your social security number has been attached to the documents under federal law we are unable to deliver at that address verification. You must contact the original firm at XXXX Ref XXXX '' I have not lived at that address since 2006. The blocked the number they called from and then called my ex wife and left the same message. They do not identify themselves as a debt collector. When I called they refused to give me any information about the debt or their address.