my account has been banned from making purchases

The code means your account has been locked from making purchases, not that the account has been banned. If you can sign into your account then it's not banned. You can go to billing.microsoft.com and update all of your information. Then you will have to
call support and talk to billing and work with them to unlock your account.

my xbox billing account has been locked from making purchases

And game has also been delisted

Purchasing codes from unauthorized third party sellers can lead to account and hardware bans

Hello, first it's a pleasure to be able to help you today.

My name is welcome to the community.

Hello callofduty20175, when it says it has been banned, it was your Microsoft account that has been banned or banned only from the game, all bans are made by Enforcement, but if you have received a permanent ban you will hardly be able to make an appeal on the Enforcement website.

https://enforcement.xbox.com/

If you've been banned from the game, try contacting developer support, but you probably won't be able to undo the ban either.

Hi alimuahmed,

Did you buy the console from a store or an individual? It sounds like the console you bought has been banned, console ban is permanent. I highly recommend returning it and purchase a console from an authorized retailer.

My device has been banned. Does that mean my Xbox Live account will be suspended as well?

The scope of any enforcement action is determined by looking at a number of factors, including the nature and severity of the violation and previous enforcement history. In some cases an account suspension may accompany a device ban, but it is not guaranteed.
To avoid receiving an account suspension make sure to follow the Microsoft Code of Conduct.

Can I still be banned if I purchased an Xbox console second-hand?

Yes. The warranty on a second-hand Xbox console is void, and the purchaser assumes the risk for any previous modifications or unauthorized activity. Even if the console’s ownership has changed, the console may still be subject to a ban. If you purchase a
console that has been previously banned you will not be able to connect to Xbox Live, and the ban will not be lifted as a result of the change in ownership. We recommend customers who believe they have not committed actions on the service to warrant a ban
to contact previous owners or users of the console.

If you have purchased or intend to purchase a second-hand Xbox 360, you can check its current ban status by entering its serial number into the

Console Check Tool. Please note that the current absence of a ban does not preclude the possibility of future enforcement action.

https://enforcement.xbox.com/en-US/home/howto#sub-topic0-3