Why are non-existent Zoho Account users still visible in request filter?

Why are non-existent Zoho Account users still visible in request filter?

Hi

Have just signed for Zoho Support after a trial period. During that trial we set up a user who is no longer with us. I have deactivated the "Support Rep" user, and also deleted the full Zoho account. There are no tickets associated with that user. I have signed out and back in again using various standard and admin users.

The problem is that the user is still available to be selected on the Requests Tab/Filter By/Support Rep option.

How can I remove this please?

thanks
Andrew