Hi, I know who this is...I am curious to know if you are an "Amy" that used to briefly date a friend of the people that own this number. As for you Thomas, I would suspect, but not know, that this is their child; he is "developmentally delayed" and "plays" on the phone alot; many times at the encouragement of his parents. (When I say encouragement, I mean they have him call people they know all the time and leave rude messages, so...I think he might believe it is OK to call anyone he wishes.) Maybe when he doesn't recognize your voice, he hangs up.
The reason I asked about you, Amy, is one of their friends had a brief encounter with someone nameed Amy this past spring; I could see them sitting around drinking, and playing on the phone; they really are that immature. He is over there all the time.