Poor administration at Muelmed Mediclinic

I was admitted to Muelmed Medi-Clinic ICU on 28 January 2019 through the ER unit. I was thereafter transferred to the Medical Ward thereafter. On Friday 1 February 2019 I received an SMS from the hospital that my medical aid declined my admission.

To date, 1 February 2019 am still in hospital gowns, hospital charges have accumulated-cardiologist assessment, overnight stay, radiography charges, specialist fees.

What are my rights as a patient? I did not make an admission decision. Who is at fault here, who was supposed to do what in terms of due diligence. Administration system at the hospital is displaying gross inadequacy.

What is the response that the hospital expects from me when someone at their administration failed to do what they get paid to do i.e. to obtain authorisation and pre-a uthorisations.