Annoying Cousin HELP

My cousin has somehow signe d up to xbox live with my email and i am using it for my account , I know this because i am getting his Xbox News Letters  and Mine . The question is how did he do this without knowing my password  and can he my DLC and MS points 

 

Discussion Info


Last updated July 4, 2018 Views 0 Applies to:

Seems like he used your email for contact/mailing purposes, he'll obviously be using a different one to sign into his account.

I didn't even know you could do that

https://live.xbox.com/en-GB/MyXbox/ContactPreferences

 

You can change the email address on there, as the primary way for MS to contact you.

Cool Just wondering