accidentally and some how created two different blogs and can't delete one.

at install i accidentally and somehow created two pages:
i created one under the domain name: escritoreslatinos(dot)com
but also created another one under: escritoreslatinos(dot)wordpress(dot)com.
the problem is i don’t want to have the blog under the wordpress(dot)com and only wish to keep the one under my domain. However, I can’t delete the firt blog since i don’t have a user name nor a email for a wordpress(dot)com account. I tried several times to retrieve a password using the password recovery tool but it says that i dont have a valid user name nor email. I am new to wordpress and just cant figure this out. any help would be greatly appreciated. thanks in advance.