This is the phone number of a guy named David Cunningham, who calls himself Mr. Naughty Ninja on X-box Live. He keeps asking my son's 14 year old friend to hook him up with 14 yr old and 7 yr old girls. They tried blocking him through Microsoft, but he soon returned. How can we get this person permanently banned from X-box Live? Does he have a police record? Any help with this matter would be appreciated. Thank you.