How do I unlink an origin account from an xbox live account?

It would just be easier if they would allow us to unlink our xbox live gamertags on the account (unless you don't remember your account info) instead of having them do it for us, regardless of the safety issues. It's getting annoying because, everyone is going to keep asking you this question until you make it so that they can do it on their own. ☹️ Example, I have my facebook page connected to my current account. I am allow to unlink my facebook account anytime I please.