Who called from 9141895649

this number rang 3 times and hung up. I got "this call cannot be completed as dialed" message when I tried to call back.

i keep getting calls from these people i various locations wanting to give me a free i pad. i keep telling them that i don't want their fricken gift

I have been called twice.  Both times in the middle of the day telling me that I won a free ipad.  All I have to do is go online and register on their website.  When I tell them I am not in front of a computer they said I can do it on my I phone.  When I tell them that I am busy they hang up on me.