Change Apple-ID to a previously deleted one

I have two accounts with different Apple-IDs:

• myname@gmail.com
• myname@googlemail.com

For Google, for both domains above, the E-Mail address is the same, even though for Apple there are two different Apple accounts linked to the addresses (Apple-IDs) above.

After deleting my @gmail.com Apple account, so the mail address it's not blocked by an Apple account anymore, I also got the confirmation for deletion by Apple.

Now I want to change my Apple-ID of my current @googlemail.com account to @gmail.com.

Even 2 weeks after confirmation for deletion, Apple still tells me that @gmail.com is still not available.

How can I fix this?

Thank you very much for help!