Claim not being paid out

I called the discovery call centre to enquire about going to an ear throat nose specialist and was informed that I can go to any one but only a portion of my claim will be covered if they are not part of the network. Dr Gill is part of the network but only will be covered partially, so I went to the doctor and had to pay over R1000 and somehow discovery is now not processing this claim. I sent the claim for this and a co-payment for meds in one email and have since received a response as to why the co-payment wasn't covered, as well as getting an email about applying for a chronic illness benefit (which I didn't do)...yet the claim is just being ignored? How is this possible and why am I getting emails about chronic illness benefits? If the doctor put the wrong codes onto the invoice, please advise so that we can fix this - if everything is correct, please process the claim or advise how long this will take...I am really disappointed with discovery health. I felt that I went the extra mile to ensure that I can visit the specialist just for my claim to be disregarded...