Who called from 9412035908

Just got a call from this number....answered and got the same strange music, no one said anything!

This number is annoying to the point of being criminal.  It says Child Leukemia.  I have asked them so many times to block that it is not even funny.  How on earth they stay in business is beyond me!

The calls are driving me crazy.  There is no answer when I say "hello",  after a while they hang up.

Calls and leaves no message

This number keeps calling. I have blocked them. The phone rings once and then blocks the call and shows me the number. They still keep calling.