Hi,
I'm sorry to hear that you're experiencing this issue. I'm happy to help.
If your account has been hacked, please use the sign-in helper tool in the link below to guide you to the appropriate solutions. The link provides comprehensive steps to help you recover a hacked account and also gives you the option to chat with Microsoft Support as a last resort:
https://go.microsoft.com/fwlink/?linkid=2196140
Also, please fill out the account recovery form here: https://account.live.com/acsr
Microsoft takes account security seriously, so the recovery process is fully automated to prevent unauthorized access. Please complete the form using a device and location you’ve previously used, and provide an email address you can still access.
Microsoft usually reviews requests within 24 hours. If your request is approved, you will receive instructions to recover your account.
You can submit the form up to two times within a 24-hour period and include any new information you remember each time.
If none of these steps work, I’m sorry to say that if the account has already been taken over and the sign-in details (such as the username or recovery information) have been changed, recovery may no longer be possible and the account could be permanently lost.
Regarding your Minecraft subscription, try contacting Minecraft Support directly and explaining that you have a Minecraft subscription on the hacked account so they can check what options are available for you.