SJM Marketing threats, law suit, police, serve Internet

I just received a call from these folks and it went to my voice mail.  The number used was the number of our local police department.  The person identified themselves as an investigator for my county and told me to turn myself in or call the toll free number given in order to avoid a check fraud conviction.

I call the toll free number and gather that this is SJM Marketing and they are suiing me for check fraud unless I pay a certain amount of money.  I also got the name of the lawyer that was suing me on behalf of the company and quickly found that this man does not exist.

So I call my local police since that was the number used to contact me.  The sheriff's deputy informed me that the investigator was not one of theirs and the 'pre trial docket' number does not exist anywhere in my state.  Also the deputy informed me that there are phnone apps that disguise a caller's number.  This gentleman that fist called me used the police fax number.

I call SJM back and they admit that the investigator that originally called md was a contractor that they use.

Bottom line, they don't have my current address, this occurance was supposed to have taken place in 2008, I declared chapter 7 in 2011 and it is now 2015.  I did not give them my current address or any financial info. And finally, why has it taken them seven years to contact me?

I am also scared of retaliation for the original and the first person I contacted from the company were very belligerent.