AUTHORIZATION GIVEN, BUT NO FUNDS AVAILABLE?

I am assistin my father with his medical aid, due to his old age (being 80). He had to go for consultation with an urologist. His house doctor arranged for this and obtained authorization which was given by Bonitas. This was last year. In January we were informed that there is an account due to urologist that my father now has to pay, as the medical aid did not cover it. Now apparently I have been told that there are 2 departments, one giving authorization and the other one works with the funds available. Apparently there were no funds to pay for this visit???I have sent queries and emails and no one is getting back to me. The urologist advised me today that the medical aid has rep**** to them directly to advise that they will not pay as there were no funds. Surely this must be doubled / tripled checked when giving authorization for a procedure. Imagine if this would have been for something bigger or worse, how much would my father than had to pay???? If we knew about this, my father would have rather postponed the appointment or made prior arrangements for payment??? Please can someone assist and let me know as this is highly unfair towards a member who has been lifetime and loyal client of Bonitas, they pay nearly R10 000 a month and this is how they get treated. My father is 80 years old and does not need all this unnecessary stress, as he is taking care of my mother 24/7 as well who is bedridden. I have emailed to all email addresses and keep getting reference numbers like 040325QTXW3N, but still no one replies to my queries? Really disappointed and would love to change over to another medical aid, but my parents ages are counting against them. Nicole Wessels (very concerned and upset daughter). PLEASE CAN SOMEONE JUST ASSIST???