Can you report someone hacking into your xbox live account?

My friend has been telling me that I have been on for the past two days, but during that time my xbox was in my room far from the internet.


I was wondering, can I report this to microsoft?


Also is there a way to change my password so no one can use my xbox live account except for me?
Can you report someone hacking into your xbox live account?
Yes, call 1-800-4-My-Xbox and report the activity. They can check the IP address of whoever may be using your account.
Reply:Yes. Call 1-800-4-My-Xbox immediately and let them know what problem your having!