Xbox Hack Attack

That was a ddos attack,completely different from being hacked.

Xbox live has never been hacked.

They weren't hacked. They received a distributed denial-of-service (DDoS) attack, which means that Xbox One servers were flooded with a large (fictitious) amount of traffic. It's not the same as hacking. But yes, Lizard Squad did attack again.

It sounds like you're being subjected to a denial-of-service attack.
This page will explain how to stop it. You should report the incident to your Internet Service Provider (ISP), as they will be able to trace and stop the attack, as well.

Alongside all that, power down your modem and router and allow them to reset and get new IP addresses. This should also prevent the attack.

I have reported this individual twice and no response. They have shut down my internet 3 times already. I tried the steps you provided earlier and they still are able to shut my internet down. I am on the phone with my isp trying to trouble shoot. please
advise

Hey Raj thanks for taking the time to bring this issue to us!

We apologize for this issue but rest assured we are here to help. First things first we suggest to restart the Network Hardware (router and modem), unplug them for a full 10 minutes, no less. Once that is done clear the Network Card Cache on the console
to get rid of any leftover data stored on there. Also report said player to our
Enforcement Team.

To clear the Network Card Cache:

Settings

Network

Network Settings

Advanced Settings

Alternate MAC Address

Clear and Restart

Give these steps a shot and let us know how it goes!