dynamic recovery solutions harassment Greenville south carolina

Its been over 10 years that I owed around 1200 to Island Finance now Dynamic Recovvery Solutions has been sending me letters and calling my personal cell phone to tell me i owe 5040 dollars.  I contacted them at 813-644-8778 and they already had all my information witch I found odd because this was my first phone call to them that all my information would pop up that fast in their system.  I spoke to a women and told her to stop harrasing me and the lady said that wasn't harassment and that they have to get the amount one way or another  I told her i was going to make a report and she said she was just trying to help me and that she didn't care if i made a report or not that now she is going to put down that i refused to pay and that actions would be taken against me.