Who called from 3212833645

I do not know who this is, but they call me twice a week.  Whenever I pick up the phone, I say hello about 10 times then then call disconnects.  Nobody ever responds.  I have told my phone company but they say they can not tell me who it is and they want to charge me to block it, so I have never blocked it.

The company is AHA.  The phone number is listed as being owned by XO FLORIDA, INC.

calls twice a week.  Called back and got an answering machine.  Never leaves a message when calling

scam artists, computer generated, called and manipulated child for information

I had made online inquiry for health insrance and think this is an insurance person responding but they do not leave a message