I don't know some chick that only says helloooo when I answer my cellphone WEIRD!

After some digging, I have discovered that this number is spoofed.  It does not exist. Kids playing around?

Who is this?  They called 2x at 9:15PM, and 3x at 2:20AM on 2/1/11 and 2/2/11.  What insanity causes people to call in the middle of the night?  Fortunately, for me, I turn the ring off at night, so not to be woke up.  Because of these crazy calls, I no longer have the ring on at all, and I return only calls that I know.  I do not answer any of these calls, nor do I call to check them out.