Dial the number, hand him the phone. My kid did the same thing at age 11. The woman asked him three questions. “Do you eat regularly?” He responded everyday. “Do you have clean, pressed and untorn clothing to wear?” Again, Yes. “Do you have a warm bed with clean covers, to sleep in and pajamas?” Another affirmative answer. Then she said, “Well, we can come remove you. Put you in a foster home for a week to 10 days maybe longer while we conduct our 
investigation. You will go to whatever school is opened in the jurisdiction of your foster family. You can bring 2 pairs of pants, 3 shirts, 3 undershirts, 5 pairs of underwear, 5 pairs of socks, one pair of sport shoes. No toys. One family photograph. We will need time to interview your parents, your grandparents, your friends, your extended family, your teachers. It can take a month or longer. Many take 4 months or more. I will send the police out for a cursory evaluation. Are you in IMMINENT danger? If so head to your closest “Operation Safe Haven”. Have them call the police as soon as possible. Someone will pick you up. You may have to spend the night in protective custody at the police station. This is my name and number,and my ID call number, write it down, the police will call me when you are at the station. I will be waiting to hear from the police and you.”
He hung up and never did that again.
His sister, not so much. She took off at 13 with a guy(22 in the military). They kept her in a psych unit for 5 months. It took another 8 months to go through the “proper channels” to get her out of the situation she got herself into. Her and this guy thought they could drag us through the dirt and she would become his “ward”. He could get military pay on her once he got “court appointed custody”. To do that they had to prove us “unfit”. Which was impossible. I was a “sworn instrument of the court”. My husband was a corporate CPA.
I worked doing home visits, making recommendations to the court about removals of children being abused or treated badly. My credentials were impeccable. My husband gave testimony in Federal Court concerning financial pictures of multi million dollar institutions. None of his testimony was ever impeached. They knew she was being mercenary.
Needless to say she was given a choice, “go home and stop causing trouble or they could/would make sure she had LESS free time to cause problems.” Her choice (but not really) catch my drift.
Get a list from their website of what is allowed if they go to foster care. Print it out, let him read it. Him threatening you is a power play. He is trying to intimidate you to get his way. Don’t be bullied by a boy.
