Need help getting a email changed I forgot my old email

I already made a post about this and it keeps glitching out and I have to retype my entire post so I’ll just make this short I really really need help getting my old email changed to switch my authenticator to a new phone Jagex keeps denying my appeals even though I provided plenty of correct information about my account I don’t wanna lose my account because of my iPhone not working I can’t get my authenticator code somebody please help