Constatntly being phoned for incorrect billing

After visiting the Sandton clinic ER on 1st of December to collect a script for antibiotics I have been billed for a lancet glucose test which apparently was administered at me at this visit.<br> <br> After informing Lancet laboratories that I did not have a glucose / ***** test or any other form of testing they are still constantly phoning and requesting i pay this outstanding invoice.<br> <br> I dont know how many times I have to tell the accounts consultants that there was no testing - please stop hounding me for payment for a service i did not receive.<br> <br>