LANCET REFUSES TO ASSIST THEIR PATIENTS

I have received absolutely terrible service from lancet labs. I went for prenatal blood which will be covered under my maternity benefit on the medical aid. Initially the incorrect ICD10 codes were submitted to my medical aid causing the claim to be paid to the bare minimum. I called and asked for this to be corrected. I sent an email confirming the correct icd10 code and a letter from my doctor stating this is prenatal tests. Lancet assured me this will be corrected however they only added it to the invoice but left the icd10 codes the same. The medical aid called to advise they needed it to be corrected however lancet again refused. My medical aid is now trying to get the matter resolved however I am still receiving messages to pay a R2000 account which will be covered by my medical aid. Lancet is refusing to assist with getting the account paid and have been advised that my medical aid is dealing with it from the side yet continuously send sms's and calls to pay the account