1 username, but unintentional 2 different accounts?

I have unintentional 2 different accounts with the same username.
Is there a special contact (mail address) for forum problems like this ?

greetings,
Lutz

PS
Please excuse my limited english.

As far as I know there is only one generic email on the contact page. Posting here made proper people aware, I am sure.

@ Architect
Many thanks for your answer. Then I will write the details to this email address.

greetings,
Lutz

PS
(Automatic translation, sorry :-[ )

I have forwarded this to the right people.