This number has, across the span of 6 months, texted inappropriate things to my minor daughter. At one point a picture of a naked butt was sent. When I called the person, he said his name is Charles Angoy. I'm now going to get my daughter's number changed.

I hope you also contacted the police.  You could be dealing with a pedophile stalker.  If this has been going on for 6 months it is long past the time to get the authorities involved.  If the number is from out of state, you should also contact the FBI as this becomes a federal crime when it crosses state lines.

This person give textin to my phone n callin my phone, but every time I call back they won't answer. I need to block this phone number from callin my phone or text message...