harassing phone calls

I receive daily calls from ph. # (262) 703-1977. A message is never left. I used the reverse directory & discovered the calls are coming from a collection agency used by Kohl's. I do not have a Kohl's card. I believe they are trying to reach the person who had my ph. # before I did, as I have received calls from other agencies trying to reach a "Gabrielle Long."  I am tired of having to delete their "voice mails" every day.
                                                                               Thank you for any help you can give me,    Linda