Go to the ticketmaster site.
They identify you by the email address but also by the credit card.
Go back to ticketmaster and enter your credit card details and you will be able to see the details of your booking.
Customer service in English should be here.http://ayuda.ticketmaster.es/en/
If yahoo is like gmail you can make an alias email to associate with your real email.
You could make an alias so that the email sent to the wrong email will get to you.