Trs limited Charged me for a product I didn't even sign up for. Internet

 On April 25 ,2017 I received by mail from Tate & kirlin associates, inc. stating I owe $139.97 for a product I did not sign up for from 2015. Called Tate & kirlin associates insisted that I pay or my credit would be ruined. Called and talked to Sandy and she told me to write a letter stating that the claims made are fraudulent and the more I looked into this Corporation the more fraudulent I found. Can't understand why it took a year for them to send me something or contact me period if I owed this amount of money.