They keep calling my land line phone number to collect a debt for the person who, apparently, used to have my current phone number. I 've had this phone number for approx. 5 years now, and they continue calling for someone else, asking if I know this person, if I have any information about their whereabouts, etc. I have no idea who this person is or where he is, etc, I 've asked them to stop calling my number, and they keep calling it.