On   XXXX   XXXX   XXXX     at   XXXX   XXXX   ( MDT ), I received a phone call on my cell phone from  XXXX . I did n't answer it. At   XXXX   XXXX  , I received another phone call on my cell phone from the same number. This time the caller left a voice message. The message was not for me, but another person.   The message denoted if the debtor ( not me ) did n't contact them, then they would n't be able to work out something on their restitution. The message denoted failure to contact would result in " legal papers '' being delivered on   XXXX   XXXX   XXXX    .   Note : I know for a fact the debtor does n't owe restitution, nor has ever been convicted of a crime.   I called the phone number and a man 's voice answered the phone with "  Mr   XXXX   XXXX . '' There was no denotation of the name of the firm or this was an attempt to collect a debt. However, I explained I am not the person they are trying to reach. I asked for them to stop contacting me. I provided my cell phone number and was assured I would n't be called.   At   XXXX   XXXX  , I received a phone call from an " hidden '' phone number. I did n't answer the phone. The caller left a message that the legal papers will be served on tomorrow  (    XXXX   XXXX   ) between  XXXX  and   XXXX   XXXX  . They further stated they believed I would be at work, and so they would go there after stopping at my home. At work, they stated they would seek out and talk with my supervisor.   Note : This is the second time this same sequence of events occurred with this firm. The first time the firm refused to provide me with their name or address. However, I now have their information.   I called back and talked with Mr.  XXXX . Although the second message was a continuation of the first message, Mr.  XXXX  denied his firm called. Mr.  XXXX  wanted to know how I knew the debtor. Mr.  XXXX  stated my name and number was provided by the debtor. I advised Mr.  XXXX  talking to me about this other debtor was a violation of the Fair Debt Collection Practices Act. Mr.  XXXX  immediately hung up. I called back and was hung up on immediately.   After several attempts  (  to have them agree to stop calling me  ),  the phone was answered by the same voice who left the second message ( after I had asked them to not call me ) on the hidden number and identified himself as "  XXXX   XXXX . '' I explained hiding who they were violated the FDCPA, this person stated the FDCPA did n't apply as they were not " attempting to collect a debt. '' I asked what this was concerning, and he denoted they " prepare and serve legal paper for other firms. '' He hung up, when I disputed the premise the debtor gave them my name and phone number.   After several further attempts  ( t o have them agree to stop calling me  ),  the phone was answered by a man 's voice who identified himself as a " Managing  Director  '' of their " law firm. '' I explained I called and asked politely to have them not call me. The firm responded I have never nicely called their firm. He denied using his firm uses " hidden '' numbers and attempts to collect debts with third parties. However, he refused to stop calling me as he stated this is n't a debt collection attempt. I asked what this is concerning then, and he stated his firm prepares and serves legal papers on consumer debt. When I pointed out that is " debt collection '' he hung up on me.   When I called back, I was hung up immediately.   Then, I called back and immediate ly (  mostly likely because of caller id ) they fully identified me, gave me my full address, told me parts  (  off the internet ) of my life, and threatened to contact the  Sheriff 's Office un less I stopped calling them  XXXX  trying to ascertain this firm 's actual identity ). They then hung up on me.   I called a few more times and was immediately hung up on. Then, the call went to a voice message machine from which I learned the firm 's actual name.