Very poor customer service

Around the years 2000, my wife and I were members for a short period of Caremed SA medical aid. We changed to a different medical aid after that. We now have to change to a different medical aid once again and we need all prior medical aid membership certificates in order to prevent being placed on a 3 months probation period with the new medical aid. I contacted Medihelp and Bonitas and within 24 - 48 hours I received communications from them and the requests were resolved. At the same time, I contacted Caremed to request membership certificates from them as well. Firstly, you can only contact them via their web contact form or via their Whatsapp number or their online Chat service. I first use the web contact form, no response. Then the Whatsapp number on which I received this response, "Good day, please let me know if an agent from the IRDSA on behalf of Affinity Health has given you a call?" Days passed and I sent another Whatsapp message. The response on that was " I have sent through a call request asking an agent to get in touch with you." Since that response I have sent numerous Whatsapp messages, another message on their web contact form and even a request for a quote without ANY response. Via the Chat service the rsponse was "Someone will be in conatct with you as soon as possible". I have searched through various websites and other search options to obtain Caremed's contact details, but they are ghosts. If their communications are this bad, I can just imagine how poor are their services overall. I really want to let Caremed know through this review that they totally suck in their communications AND in the customer service!