How long does it take for xbox to change gametag?

Hi,

Have you tried removing the account from the console and then re-adding it to see if that updates it?

Add or remove an Xbox profile | Xbox Support

Hi! I'm Rostom, an Independent Advisor. I will be glad to help you here.

Please confirm on your account order history if the gamertag order says completed. https://account.microsoft.com/billing/orders/

Once confirmed, go to https://account.xbox.com/Profile and check if your new gamertag is showing there. If not, please visit https://social.xbox.com/ChangeGamerTag and enter your new gamertag to reclaim it. You don't have to pay if it's already paid.

Thnx i know

but the gametag is from the hacker and i can`t change it

so long i can`t change it all the data levels and payment is on his gametag

when im login the xbox one account everything is gone

because i login with his gametag

My purchases have always shown up immediately.

It's been a long time since I transferred anything but I had about 100Gb to switch over and it took 45 min. to an hour.