No response from Diiscovery regarding chronic health problems

My husband has taken medical for my family , we are on it since 2011. We have the LA health, LA active plan. Earlier this year my daughter, was diagnosed with scoliosis of her lumbar spine as well as spina bifida. Our funds are exhausted already as we had to take my daughter for an Mri, xrays etc. My husband and I liased with discovery trying to get approval of her brace on chronic, as her condition would need her to wear it till she stops growing. Right now her body is curved so badly that it looks like an S. Discovery clinical has rep**** back to us, saying that we should send documents, we have sent them so many times. I'm am super upset with the service that I received from Discovery. This is my daughters well being, she is only 10 years old, the sooner she gets the brace the better for her.