When creating a member account within AWS Organization it asks for root account email, this address is never validated before account is created. If you made a

When creating a member account within AWS Organization it asks for root account email, this address is never validated before account is created. If you made a typo in that email and it happen to be on a valid domain you have no access to, then it is impossible to close that account and support is refusing to do anyhing, even if you contact them immediately.