Xbox Live account hacked/hijacked. Email changed and hacker is still using my account...

You have been phished, luckily you changed your password before the hackers did. If you are unsure why they would add points to your account check this blog post out.

venturebeat.com/.../how-i-was-hacked-a-tale-of-hijack-xbox-live-and-fifa-trading-cards

the hacked manage to delete the email i use for that microsoft account and changed his/her email as primary email,
and also hacker manage to remove my phone number from the account also.

so how can i prove its my account when hacker manage to delete my email use for the microsoft account and change all the my profile info??

If there is still a phone or alternate email address to the old account (which the hacker probably just changed the email address, and not deleted it), then you might be able to recover it. But if the hacker already changed the alternate email address or phone from the hacked account, than nothing can be done.

i found the account that hacked me, using xbox, problem is that i still can't use my main account to log into minecraft and i need to somehow change it from this hackers account to my account.

My Xbox Live account and game for windows live account is the same, and I need to change the live account associated with it so I can avoid being hacked.... again... I have request 3 times to have the hackers email account removed from my live account but
for w/e reason customer support keeps failing to do so.