Treatment authorisation

I am very disappointed with the treatment I am receiving from gems.How can they approve all my icd10 codes and then not pay the bill.When querying this they phoned me and told me they wil pay the outstanding amount.They send me a sms saying that payment will be made to the dr on the 16th of October.But today the dr's <br> office phoned me and told me the payment was again rejected.Now gems is saying that these codes were never approved.But how is this possible if I have a copy of the approved procedures with no exceptions listed on the approval forms.I wil be lodging a complaint with the south african medical schemes Ombudsman.