Once joined - everything else falls to pieces

I am at my wits ends with this Medical Scheme. I am a new member and they were so awesome when I joined. I have asked initially to move my date of entry, which was never acknowledged. As a result my debit order returned. I have send mails to Simphiwe Mulaudzi on 13, 16 and again on 29 May - TO NO AVAIL. My emails are simply not acknowledged or responded to. I am getting sms' that says my membership will be terminated and I cannot understand. As the member I have tried and tried and tried again to get someone to assist me. I want to pay for my three months in total on 25 June - why is this so difficult????? Pls do not phone me - I am so angry I may just insult the caller. Use my email address, confirm the TOTAL amount (in other words my Fedhealth AS WELL AS Healthwallet) premium. Confirm the banking details for both these entities and confirm the amount for the three months premium. This serves as confirmation that, if I can get some sort of response I will pay the full outstanding on 25 June. Failing which, I will most certainly refer the case to the Registrar for her intervention. I will do the same if you terminate my membership because, as the member I HAVE DONE EVERYTHING WHICH IS EXPECTED OF ME.