Who called from 9017474300

This phone number is weird. It calls at like 3 in the morning

I got a text claiming he had 3-14 year old children for sex.

Several things you should do here:
Call your local LE and report this to them, also your phone service provider. Contact IC3, the cyber crimes division of the FBI.

http://800notes.com/arts/I2neMkbUAAo/where-to-report-phone-crime

For a cell phone, some already have call blocking, if not, there are free apps on the web that will work for some. You can google this. If you have a smart phone, there is a free app called call control. Iphones appear to have apps also. Another one is called Mr. Number.

For text messages: forwarding any text message spam you get to the short code  “7726,” which spells “spam” on most phones, to alert your network operator to the abuse.

Thx for fyi

Your most welcome! :)