Why was I banned from voice chat and multiplayer?

For information about your ban you would need to go to http://enforcement.xbox.com The enforcement team do not use the forums.

In this case it doesn't sound like the ban was due to a picture but I could be wrong. Depends what or if you have previous enforcement history as well. Like the other guys have said though you can check this information. That's all we can advise here.

No one here can answer those questions for you.

The only people that handle suspensions are the enforcement team at their website enforcement.xbox.com

The only way to contact them through their website is through the case review process if the suspension is eligible (normally has to be longer then 24 hours for the suspension to qualify).

Here is a link on their website explaining how to file for a case review.

https://enforcement.xbox.com/en-US/home/howto#sub-topic0-6

This next part is copied directly from that page:

How do I submit a Case Review?

Submitting a Case Review is easy, and can be accomplished in several steps:

1. Sign in to enforcement.xbox.com with the account that received the enforcement action and select the large box with an
   orange hammer icon, or visit your
   Enforcement History.
2. Find the enforcement action that you wish to have reviewed, and select
   Apply for Review.
3. Read the Case Review Terms of Use and agree by clicking the checkbox and selecting
   Agree.
4. If you are already eligible for a Case Review, select the green arrow icon. If you are not yet eligible, you will be presented with a short questionnaire. These questions help gauge your understanding of the Code of Conduct and associated
   policies. Upon successful completion of the questionnaire, select the green arrow icon.
5. Provide any details (up to 500 characters) regarding the enforcement action that may help XBLPET conduct a more complete investigation. This may include context around the activity or content that received enforcement, information about your game
   activity, or any other facts that you believe are worth noting. When complete, select
   Submit.

After submitting, an Xbox Live Policy & Enforcement agent will begin a thorough review of the enforcement action. This includes reviewing available data and re-examining evidence that contributed to the enforcement, taking into account
any new details that you have provided.

But why can’t we just have it as a 13+ can chat setting because voice chat is on there. Voice chat people can say what ever they like, ye they get banned but with the chat box it’s hashtags instead of the word

This is not about the forums. It's the voice chat. When I tried to join voice chat in Game Bar, it closes. When I tried to join voice chat from my Xbox App mobile, it reveals an error.