how to banish

Hi, sorry you are having issues. Here's an article on how to block and mute in the mean time while enforcement investigates the situation Xbox
block and mute

Hi there purplebogie

You cannot ban people yourself on xbox live, only enforcement can. If you report someone who breaks code of conduct, the enforcement team will investigate and determine if they broke any rules, and of course apply the action suited to that situation.

As others have said, the only people who can ban players on Xbox Live is the Xbox Live Enforcement team. You may not hear back from the Enforcement team, but as long you have reported them, the report will be investigated (it may take some time) and the
appropriate action taken.

You can only report a person. Enforcement team will review this and if needed ban the player. If you're getting harassed you can block the user.

You don't usually hear back from the Enforcement Team when action is taken against another user you have reported. If you have reported them for breaking the rules, trust that the Enforcement Team will do their job.