They have been calling XXXX XXXX times a day, starting about two weeks ago. Each time I answered, I received no response. Also when I ignored the calls, they left no voicemail. Finally after them calling me four times already today, I answer in an aggravated time. I asked in a very irritated tone, " Who is this, and why do you keep calling me? '' They asked my name, so I repeated my question. They replied, " XXXX. '' I then asked, " With who? '' They replied with, " XXXX with ICSystem. '' I then proceeded to tell them that I did n't know who they were and to put me on the do not call list. Before I was able to say anything else, they cut me off and told me they do not have a do not call list and they 're debt collectors. They then told me that they would n't tell me what for unless I verified I was who they were looking for. I then hung up. I 'm looking for ways to stop them from calling, but my first step was to file a complaint.