Not pleased how the payment settlement was handled

Was really disappointed with how my payment process was handled by medi-clinic Louis Leipoldt hospital. Visited the emergency room last year and had to go back for a follow-up visit after a week. The first visit was processed by Medical aid, the second visit was rejected due to having the same reference number as the same visit. Mind you before this I received an SMS saying I need to settle the amount of R215 which I did and I thought i was done with them. I then spoke to Abigail who then informed me about this rejected claim and I explained to her regarding the reference number asked her to change it to a different number so that medical aid can process the claim which she noted she will. I did not hear anything from Abigail after that only to hear back from their lawyers saying I need to pay the amount with interest within 5days or the matter will be escalated. I followed up with Abigail which she then sent me an email with a statement saying medical aid accepted the claim however they did not pay it. I followed up with my medical aid and they said a claim with a different reference number was not submitted to them hence they provisionally accepted and requested a different reference number which never came. I checked my claims profile and a claim with the same reference was submitted. I am really not pleased with how the whole matter was handled when all that one needed to do was change the claim reference number as requested.