Ken Morales from FFG & Associates continues to call me regarding a 'debt' that I owe their client.  They cannot provide any information or back-up regarding this debt & he becomes very rude, insulting & threatening when I ask for details.  He has some information about me, which is frightening.  After I told him that I did not owe anyone anything & that if I did, he needed to provide back-up, he began attacking me personally.  I hung up, but now he calls several times a week & hangs up as soon as I answer.