I need help. I got a problem

It depends on which console you use.

For Xbox 360 goto settings - system - storage - highlight storage device, and press y, then select clear cache

For Xbox One power cycle the console by pressing the power button down on the console until it turns off, then wait 30 seconds and turn back on.

Actually that is already a bigger problem, I recommend that you follow the steps on this page:

"How to recover a hacked or compromised Microsoft account"

https://support.microsoft.com/en-us/account-bil...

If your experience any following issues: Unable to sign-in to Xbox Live, Your games are not launching, Kinect is not performing like it should be ( Kinect won't register your voice ) , Etc. Performing a hard rest on your console, also known as a power cycle
or full reboot, cold restart can help fix this any of this issues.

To perform a hard restart, hold the power button on your Xbox console for 10 seconds while your console is on. This will power down Your console. When the 10 seconds period is over press the power button to power up you console again, And the green start
up screen will display.

Your cache would be cleared, Some of your setting would be reverted, But your data are preserved, and all your issues should be resolved.

Hi, I'm Miguel, community expert, I may not be an employee of Xbox, but I see you need some help, I'm Happy to help you.

Ill highly suggest to verify if your account is been compromised following these steps in this page:

https://support.xbox.com/en-US/help/account-pro...

If the case is you account been hacked 100% sure ill suggest to follow these

try to fill out the account recovery form on https://account.live.com/acsr

He may also use the Microsoft’s interactive tool here https://support.microsoft.com/en-us/account-bil...

Hi and thanks for reaching Microsoft Xbox gamer's community. My name is Josef.
I'm an Independent Advisor and a Microsoft Xbox user like you.

Hope you're doing great today despite this Hugo

Sorry to hear that your account has been compromised, you can try to recover it following steps here:

https://support.microsoft.com/account-billing/h...

Please note that here in the forums no one can assist you with this process / tell you the specific-new email address / modify or share account details due to privacy and security policies