I have a situation with a hacker that can ban my account. His GT is [mod removed - please do not name and shame on the forum thanks]. He could be faking but he said he is very serious about this.
He can`t ban your account,report and block.
How do you know hackers can do anything!
Because they are 12 years old kids that make ridiculous threats to scare gullible people.
No one but XBLPET can ban your account.
You wont get banned. But remember to not name and shame people. It's against the rules.
Just report and block the guy and be done with him.
You can file a complaint and make sure to mute and block them if they are harassing you. here's a link to explain the process.
Owen is correct, it's usually some person with no power of any kind trying to intimidate you. If you use the link above they can learn how enforcement really works.