Unresolved Claim for 3 months and running

On 27 July 2017 my husband and son visited the dermatologist. I went to the same dermatologist the following week 4th August 2017. I submitted my husband and son's claim on the 28th July 2017. Mine I submitted on the 4th August 2017. After numerous phone calls I have received me payment on 3 September 2017. My husband's claim was however rejected due to the written Invoice not have the correct ICD10 codes. On 23 August an account from the Dr was sent to Discovery, which was still not good enough. New claims was sent on 23rd August for adjustment to codes etc. Discovery has been in contact with the Dr's office and the lady have sent numerous updates to account statements. I have followed up with the Discovery and the Dr about 8 times. The last mail I have sent on 28 September 2017 and still up to 19 October 2017 have not heard a word of this. This is pathetic service. how about you send e the CEO's celnumber maybe I can take it up with hi,???? THIS IS THE WORST SERVICE I HAVE EVER RECEIVED, AND DO THEY CARE??? COULD THEY BE BOTHERED???