They called asked for my mother-in-law.  I told them that, that person lived in another state.  I told him to take my phone number off of their phone list.  He said he would and then proceeded to ask if she was a relative of mine.  I told him it was none of his business.  He then proceeded to lie and say she had this down as her home address.  I called him out and told him she does not and that he was a liar.  He says, 'I just asked if she was a relative...' and I reminded him that I just got through telling him it was none of his business.  He bids me good day and hangs up.  More in likely a collection agency, who shouldn't be calling other people for someone else's bills.