Not willing to pay

I am currently on a hospital plan a classic core plan which gives me unlimited in hospital cover and 200% relative claims. My daughter is currently in hospital. She was born two months premature. She recently had an infection which spread throughout her body.the doctor had to do a number of blood works and blood tests through Pathcare. Pathcare has submitted these claims to discovery and discovery has told me that there are limits to the number of claims Pathcare can claim on a day. This is all in hospital claims as my daughter is still in hospital. I have authorization number and discovery says that I must pay for in hospital claims. So why do I pay large premiums for 200% cover and full cover on in hospital if I must pay bills that discovery ought to be paying.