How to get Microsoft to switch my Xbox password (and email) to a new one.

Sorry to hear it. If you are using the same email/password to log in the you may have accidentally created a new gamertag overtop the existing one. Please follow the steps at the link below to change the email address of the tag you're posting with.

support.xbox.com/.../switch-gamertag-to-different-microsoft-account-on-xbox-360

Sorry to hear it. No one can hack your account unless you give them info on how to get in (ie. login and password).

I would start by changing the password for your account's email address. Then you can try following the steps listed at the link to change the email address associated with your gamertag.

support.xbox.com/.../switch-gamertag-to-different-microsoft-account

The link also provides conditions that may prevent you from changing the email address.

If you know the email/password of the profile you had and entered it in there is a possibility that you may have created a new gamertag overtop the exisiting one. Please follow the steps at the link below to change the email address associated with the
gamertag.

support.xbox.com/.../switch-gamertag-to-different-microsoft-account

Hello,

Even if the email address is no longer functional you can still access your original account as long as you have a password or security questions set.

You can reset your password on the original account :
account.live.com/.../reset

Once accessed you would add the new email address -
support.xbox.com/.../change-email-sign-in-for-microsoft-account

It is possible to move a gamertag to a new microsoft account but that new account cannot have a gamertag attached :

support.xbox.com/.../switch-gamertag-to-different-microsoft-account

I hope this info is useful and you can get to where you want. I would suggest trying to add an extra email to your current gamertag after recovering the password - its an easy option.

Good luck & happy gaming

Since I was young when I got my Xbox the account was made using my sisters email, seeing as though an Xbox account and Microsoft account are separate, how could I put the Xbox account under a new Microsoft account without deleting my sisters Microsoft account entirely? I’ve tried calling but have had no luck.

A Microsoft and Xbox account are actually not separate. They are one of the same.

If you change the Microsoft email on the account to an email of your own then your sister will lose her email address forever.

You can add your own email as a secondary alias however youd still use her password to sign in and anytime she changes her password shed have to give you the new one.

Long story short is there isnt any way to completely separate the two without one of you (either your sister or you) having to start completely over. (either you with a brand new xbox profile or her with a brand new Microsoft email)