Lancet Laboratories (DRS Mauff AC & Partners) Very Disappointed with Service and Communication

My husband was sent a bill in March 2025 regarding an outstanding amount R2611.70 when I queried what this is for, I was advised it for when my son was in hospital in December 2024. I called my sons GP to query this because I am aware that in hospital all bills are covered by the medical aid, and it was a hospital in the medical network. The GP receptionist called medical aid and quired all bills was paid. I contacted Lancet March 2025 to query because my husband kept getting sms’s and emails about this bill was advised they going to investigate because there is a note about pricing or codes. I called again in April because there was no communication if it was resolved, and we kept getting messages about making a payment once again was advise it has been investigated and will be resubmitted to medical aid. I have called since March 2025 was told 2 to 5 days then 7 to 14 days and still it not resolved. I have agents’ names dates time of the call including a supervisor or Team leader that was supposed to email or call me, which she/he never did contact me or my husband. 1) This is very frustrating if Lancet prices increased, or they billed the medical aid wrong how is this our problem. 2) In hospital I was never contacted by lancet to say there is going to be a shortfall and if we want to continue with the testing on my son. I have been to a few hospitals with the same medical aid and never had an issue with bills not paid. Now I am receiving sms for IMMEDAITE payment WHICH I WILL NOT DO I need answers!!!!!!!!!!