Cannot add a user (Already in another organization)

Cannot add a user (Already in another organization)

Hi!  We are trying to add dtapia@indices.com.co  to our Zoho Campaign account but it's saying she is already part of another organization. She tried logging into a campaigns before and it tried to make him setup a new company rather than log into our main campaigns account. Now when I try to add her as a user within our campaigns account, it says she's already part of another one.

Can you please clear out dtapia@indices.com.co from any organization, please.

Thank you.