MEMBERSHIP cancellation and re-instatement

My son has completed his studies and started to work. I have tried for weeks to get his application for membership approved and to get him off my medical aid and onto his own medical aid. Absolutely ZERO communication from them at all whether in writing and or orally.His medical aid was approved yet they are still billing me. I phoned them to simultaneously remove him from my medical aid and to re- instate him on his own fund at the same time.However they refused and he has to call new business to do this. It is totally illogic and absurd as the 2 procedures MUST OBVIOUSLY be done SIMULTANEOUSLY. The call center operator also clearly does not understand this at all