I would like to know for how long I'm suspended for. I have been banned from messaging and ...

you won't get exact words as they also are accountable to the terms of use

You will only get the type of suspension at https://enforcement.xbox.com

Any enforcement actions are handled by the enforcement team at their website enforcement.xbox.com

You can sign in at that website and see any enforcement actions that are on your account and if eligible you can file for a case review were the enforcement team will reinvestigate your case and determine if they can lift the suspension sooner.

For the gamertag, you'll have to post here:
forums.xbox.com/.../41.aspx

Did you get your suspension e-mail? Since you can log on here, it's possible your tag wasn't banned and just your system.

All console bans are forever and irreversible. He likely tried to open or mess with the xbox with hacked programs, though there are other ways it can happen. For more information see here at
http://www.xbox.com/en-US/consoleban

The xbox bans lately are Ms ripping people off and banning alot of people that did nothing Ms is good at being scam artist...

Microsoft do not un-ban previously banned consoles as they are permanent. They do not ban people's consoles/accounts lightly, they do so after several investigations.



The most common reason for a banned console is modifying it, but there are other reasons such as marketplace theft.



You might want to post in section 14 in order to get an official answer. Although they might just delete your thread and post a link like below as they do not discuss console bans.

Console Ban

You might also want to check out
this thread.