Keeps calling & leaving no message. I do not answer numbers with which I'm not familiar

Not sure who they are, but they are calling my landlord.  They have told him that they are trying to serve me legal documents and have been for several months.  He said when he asked for call back information, that their call was disconnected.  When you call back the phone just rings with no answer.

This is a common ploy by criminals masquerading as debt collectors who are attempting to extort money from people by scaring you into believing that you will be criminally charged, go to jail, lose your driver’s license, have wages garnished, be sued, and a variety of other variations on this,  all for an alleged or nonexistent debt.  One of the tricks they use is to call your work place, friends, or relatives repeatedly in an attempt to shame you into paying.  They also use the “process server” ruse who calls and claims he is going to serve you, but then says you could avoid it by calling another number.  Please note that process servers do not ever call ahead.  That way you can’t dodge them.

Read up on your rights here and also make a complaint at this government site:  http://www.consumerfinance.gov/

Also file a complaint with your State Attorney General's office.
List of State AG’s offices:   http://800notes.com/faq/attorney-general

Thank you BigA - They called me today, Mr. Alan Brooks from Civil Procedures.  Wanted to know if I was going to be available tomorrow 8-5 so they can deliver me some documents.  If I have any questions to call 855-799-3269 and use the reference number he provided.  I called and the phone rang 6 times, Answering machine picked up  You have reached CP & Associates, please leave your name, phone number and case number and we will be sure to call you back!

You're welcome!  Just tell them to meet you at the police station to deliver those papers and see how quick they hang up.