No longer have access to family organizer account

I no longer have access to my family organizer account. I'm almost certain it is under an old work email. Somehow, we got everything mixed up with my son's Xbox account. Now, the account associated with my personal email says I'm 9 years old. As a "child" account, I'm severely limited on what I can do online. It's quite frustrating. Can someone tell me how to change the family organizer when I can't even access the account? Can I just delete all Microsoft accounts and start over?