Why does xbox ban people without a warning?

Any type of modications will get you banned.

When signing-up, you agreed to these terms.

Even if you were hacked, it is your fault for not taking care of your gamertag.

1) Use a regular size font.  You words are running into each other

2) Protect your email, password and secret questions on your accounts better.  Read the Xbox Support Account Security page  One tip, with the secret question.  Lie in the answer.  For example, if you chose the secret "What is your mother's maiden name?", and the real answer is "Smith", put something else, like "Jones" in there.

3) Microsoft don't issue, simply because they are not obliged to.  You agreed to these two things when creating your gamertag

[quote user="Code of Conduct"]

[/quote]Link

and

[quote user="Terms of Use"]5.  Your Service account, associated accounts and accounts from third parties.

Only you may use your Service account.  You must keep your accounts and passwords confidential and not authorize any third party to access or use the Service on your behalf unless we provide an approved mechanism for that. You must tell us right away if you suspect misuse of your accounts or any security breach in the Service. For some parts of the Service, you may be able to set up additional accounts that are dependent on your account ( “associated accounts”).  You’re responsible for all activity that takes place with your Service account and any associated accounts.  Except as otherwise stated in this Section 5, you may not authorize any third party to access and/or use the Service on your behalf, except where we provide a mechanism for third parties to access the Service on your behalf.  We may limit who may use your Service account or any associated accounts including where necessary to protect the integrity of the Service or your accounts.

[/quote]Link

If you believe your account has been breach, you should immediately change the email and password on it (if possible) Here's how.  Then call Xbox Support reporting the account stolen.  You'll find the phone number Here

It also doesn't help your story when you reference a known modding website in your motto. I don't believe you. I think you did the modifications yourself and got caught and are now wishing you didn't do it. Well the only way to learn from your actions is to start over this time following the rules you agree to when you create the new account. You might actually want to take the time to read them so you can avoid any future bans/suspensions.

Maybe somebody can help me. I left my xbox for 5 minutes and when I came back it said I was banned because I was idling for 15 minutes. I'm banned for 3 weeks. Why did it do this. I have people that were playing the game with me and they know I was only gone for 5 minutes!!!! Please help. I want this ban lifted.

[quote user="SICKONE9"]I left my xbox for 5 minutes and when I came back it said I was banned because I was idling for 15 minutes. I'm banned for 3 weeks. Why did it do this.[/quote]

You need to create your own topic/thread, not hijack somebody else's thread. Also, if you've had an enforcement action for one specific game, you need to talk to the developers at their own site, such as Bungie.net for the Halo games.