Help! - Need to reset account information

I got a text message from Microsoft saying that someone was trying to change my Microsoft account security information. I was able to stop this action but an account with Waypoint was already created based on the email. Is there a way for me to essentially delete this account and start over, or at least update the account name? I wanted to take part in the PC MCC insider sign up, but don’t want to associate much more with this account name than I have to.