Member for 15 years and no service when needed

I;m on a medical aid scheme for 15 years - my son is almost 2 years old - needs specialised treatments, it's not covered in my scheme comes out of my medical savings...I sent through forms to get additional cover which has been declined....why is this????what do i need to do??? HOW WILL I BE ABLE TO PAY FOR ALL THESE TREATMENTS OUT OF MY POCKET...IF MY FUNDS ARE EXHAUSTED NOW ALREADY WHAT ABOUT THE REST OF THE YEAR???. nobody can help me when i need help nothing can be done...i'm paying an exorbitant amount every month...??? The problem i have is the procedure was done in January and the treatment plans were decided then...this is however after one can upgrade your scheme...WHAT DO I DO NOW...I DIDN'T KNOW HE WOULD NEED ALL THESE TREATMENTS GOING FORWARD...AND NOW THE PROBLEM IS WHEN I NEED THE MEDICAL AID TO ASSIST...THEY CAN'T HELP ME...CAN YOU NOT MAKE AN EXCEPTION AND LET ME UPGRADE MY SCHEME TO ASSIST ME WITH GETTING MY SON TREATED...AS FAR AS DISCOVERY IS CONCERNED THEY HAVE EXHAUSTED ALL THEIR OPTIONS AND CAN;T HELP ME !!!!!! I THINK ITS SHOCKING...WHY DO YOU HAVE A MEDICAL ...WHAT ARE THEY THERE FOR IF THEY ARE NOT WILLING TO OFFER ASSISTANCE....!!! DISTRAUGHT MOTHER!!