This person harassed me on my mobile phone twice at 5 am in the morning. I did not pick up the first time because I was confused to why a number unknown to me was calling & I figured they would realize they had the wrong number if I didn't pick up. This number called again after waking me up, two minutes after I ignored the first call, so I picked up as I thought it may be someone who knows me & needs something. What sounded like to be a male, continuously asked who he was talking to & what number it was that he called twice. His tone of voice was stern & demanding & sounded as if he was very angry. I replied to his harasing questions by saying it is irrelevant as the individual calling should know who he is calling & I am not willing to give my personal information out to an outraging & very angry male stranger who wakes me at 5 am, demanding answers. His response to my answer was to keep questioning me as his tone got increasingly angrier & controlling. I finally hung up as I do not have any knowledge of how this person got my number or who they are & harasing me, especially so early in the morning, can be a concern.