Receipt sent to inaccessible Yahoo email after changing Apple Account email

i originally used an yahoo.com address to registrer my apple account. Then i changed it to current email, gmail, but after i purchased my new phone online today, the receipt was sent to the yahoo email. I can not find in the settings where the yahoo mail still attached to this account hence i do not know how to change this going forward. I no longer have access the yahoo email. TIA

[Re-Titled by Moderator]