Bad service

I'm soo disappointed on how discovery medical aid handled my Wife's In-hospital payment. My wife was pregnant and she had a c-section appointment on the 13th June which was done and she stayed in hospital until 17th because after the c-section her blood pressure was too high(pre-eclampsia),the problem is that when she got admitted on the 13th my MSA had over R7000, when the hospital claimed for their service, the amount claimed was over R35000.00 but then discovery paid R7000 from my MSA... And said I must pay the remaining amount.... I phoned discovery last week Monday... Because now my MSA is exhausted.... They informed me that they will rectify the problem of which they did but my MSA is still R0.00....its been over a week now... And n I wanted to use my MSA as i was feeling sick..... This is soo incoviniencing... My health plan Is Classic Delta saver... ID ***