CLAIM NOT PAID - NO FEEDBACK ONCE AGAIN

Hi, I have just received yet another account from the National Health Lab for the amount of X .I received this account last year and sent it through to Discovery claims. NHL had sent the original copy to Discovery. <br> My son needed a bone marrow transplant due to a relapse in leukemia. They had to do tissue testing to confirm a match based on his outcome. I have subsequently received the same account from NHLS for the 3rd time! I have not received any response or feedback as to why the payment was not done to NHLS as this was authorized when it was done? I do not understand why we do not receive feedback when I have sent this to DISCOVERY 3/4 times. I would appreciate Discovery Health to have a look into the outstanding account .