How to remove an account at OCI?

Summary

I need to remove a very old account, made years ago.

Content

As the period has already expired, I do not have access to support. Without support I don't remove the account, without removing the account I can't use my email. 

I get the message that the user already exists when I try to create a new one.

Everything very bureaucratic and confusing nothing intuitive.

Help please. I just want to remove an account with its tenants. 

Why is it so hard?