3 years later still no paid account

I am still covered with discovery health funny enough which I am surely going to cancel end of this month for next year.i have an existing account dated back to June 2012 -my dependent was hospitalised and I followed all due procedures with being admitted into a network hospital.Firstly she was rushed to milpark hospital causality and then once stabilized -after I got preauthorisation at 2am she was moved to mediclinic Sandton I ensure I followed procedures because I was a health care broker -servicing discovery aswell.to cut a long story short .my sibling was discharged due to low blood -she has a blood transfusion which was never on her list of condontions.(never suffered from it) .after a year of documents sent to my go confirming this was never sent I took ownership and went to the doctor got the forms faxed it through to confirm it was not pre existing .discovery did their investigations and finally found it was a mistake and would pay mediclinic the 13000 which I am now listed for on my itc.i follows up with over 100 calls emails different manager and different pre auth number 3 years later they cannot allocate the funds to the correct pre auth number .i am lost for words