Complaint Review: Department of Law and Investigation

I have been receiving phone calls from the "Department of Law and Investigation" for a year.  They call my number looking for another individual who may or may not have had my phone number.  This was a new number for me a year ago.  I cannot understand who they are looking for.  The individual that calls speaks "selective" english.  His name is Brian Taylor ... although I am sure it is an alias.  He speaks with an Indian accent.

I have had enough of their calls and today told them if they continued to call my number I would sue them for harrassment.  He asked is I knew who I was speaking with.  I told him I did not care who I was speaking with.  I wanted them to stop calling my number, the person ... whoever it is ... is no longer at this number.  He was extremely indignant and insisted on telling me who they were. I would have preferred that he give me his address so I could pass it on to an attorney, but no such luck.

One more phone call and I will proceed to file legal action however.  He gave me a case number of 104339.  I feel for whoever it is they are after.  But I will no longer put up with their phone calls.