Password reset problem

Hello,
I have Stressfully been trying to do this on
my own, and I cannot get back into my yahoo mail (or yahoo period?) I have tried to All suggestions etc. I keep ending back at "find your ID" and then it sends a reset code, to my OLD phone number!The reason is I did not think to Change thIngs in my yahoo, Before I had my phone number changed and HOW...Do I get back to the place where I can Edit my Old information to Change my phone number, do i can get the code sent to my New number? THANK YOU