call at 7am oon sat and just says hello hello

Who r u/?

My niece who is 13 years old living in Indiana has received 20 calls or so in the last 16 days.  I would like for it to QUIT!!!  It is no one she knows or cares to know.  You are just chewing up her minutes.  I called this number and got a v-mail no real person to answer my call.  Huh!!!

Call 6 times in 9 minutes and woudl not leave a message. I answered the 9th time and there was no one there...then the calls stopped

phone 941-613-0099...this is the third time that I have got this call........you say that you live in Indiana?
Have a friend that I talk to in Corydon, Indiana that has a husband that checks up on her all the time, he is head of the union at Icon Metal Forming......hu?