It appears that my former sister-in-law used my contact information for a loan a few months ago. The company called me looking for them and I had no knowledge of their whereabouts nor did I authorize them to use me as a reference as I have not spoken to them in well over ten years. A few weeks ago, my niece (daughter of the same person) apparently did the same thing because I received a separate call looking for her. Do I have any legal action that I can take or request to make this end? I don't want there to be any adverse impact on my credit. Thank you.