How to Delete a Pending Child’s Email Account

In an attempt to open a temporary business email address, I selected the birthdate as October 1, 2013.  It prompted me that date meant this was a minor and I didn't think anything of it. As I was prompted to sign in as the "adult" to approve it, I realized what a pain this was going to be. Now I just want to cancel the pending "child's" account but can't even log in to do so without first signing in as the "adult" and paying $0.50 on my credit card. Side note, I want to cancel the pending account so I can still use that email addres as it's the preferred name, once it's canceled, I'm going to open that account as an adult.

Is there any way to cancel the pending minor's account?

Thanks,

Stephanie