Poor Customer Service KeyHealth

What poor service from a KeyHealth Medical Scheme service consultant. I called yesterday (11/03/24) requesting to update my banking details, she gave me an email address that doesn’t not work. Today (12/03/24) again I called because I did not get a reply from the email she gave me. She was rude and not willing to assist, giving me another email that to email to, telling me there’s nothing she can do and I must email again and hope for a reply. I asked to speak to her superior, she told me that is not possible. Clearly undermining my intelligence, who works without a superior 😪. I’ve been with KeyHealth for over 7 years now. I am definitely changing my medical scheme, wow. I wonder if other people get told that it’s not possible to speak to a superior when asking to escalate an issue.